mirror of
https://github.com/sigmasternchen/Serwer
synced 2025-03-15 07:08:54 +00:00
split into multible files
This commit is contained in:
overflowerror
parent
aa45dd0bcc
commit
f092d584fa
9 changed files with 702 additions and 656 deletions
8
Makefile
8
Makefile
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@ -17,14 +17,14 @@ all: example
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%.o: %.c
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$(CC) $(CFLAGS) -c -o $@ $<
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example: example.o webserver.o help.o
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example: example.o webserver.o ws_linear.o ws_utils.o help.o
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$(CC) $(LDFLAGS) -o $@ $^
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example.o: example.c webserver.h
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help.o: help.c help.h
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webserver.o: webserver.c webserver.h help.h
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webserver.o: webserver.c webserver.h ws_types.h ws_modes.h ws_utils.h help.h
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ws_utils.o: ws_utils.c ws_utils.h ws_types.h
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ws_linear.o: ws_linear.c ws_modes.h ws_types.h webserver.h ws_utils.h
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clean:
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rm -f *.o example
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@ -1,4 +1,5 @@
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#include "webserver.h"
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#include "ws_utils.h"
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#include "help.h"
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#include <stdio.h>
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#include <stdlib.h>
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570
webserver.c
570
webserver.c
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@ -1,122 +1,18 @@
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#include "webserver.h"
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#include "ws_types.h"
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#include "ws_utils.h"
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#include "ws_modes.h"
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#include "help.h"
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netdb.h>
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#include <stdlib.h>
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#include "help.h"
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <time.h>
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#include <string.h>
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#include <assert.h>
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#include <unistd.h>
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#include <stdarg.h>
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bool ws_host_match(const char* host, const char* match) {
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// only two possible positions for wildcard: begin and end
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int lenh = strlen(host);
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int lenm = strlen(match);
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if (lenm > lenh)
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return false;
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bool wildcard = false;
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int wnext = -1;
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int found = -1;
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int h = 0, m = 0;
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for (; m < lenm && h < lenh; m++, h++) {
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if (match[m] == '*') {
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wildcard = true;
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wnext = m + 1;
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found = -1;
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// current host char matches automatically
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continue;
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}
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if (wildcard) {
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if (found == -1) {
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if (match[m] != host[h])
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m--;
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else
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found = h;
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} else {
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if (match[m] != host[h]) {
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// found was negated; reset cursor positions
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m = wnext;
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h = found + 1;
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found = -1;
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}
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}
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} else {
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if (match[m] != host[h])
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return false;
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}
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}
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// if not whole match string matches, return false
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if (m != lenm)
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return false;
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return true;
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}
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bool ws_path_match(const char* path, const char* match) {
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// TODO wildcards
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int lenp = strlen(path);
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int lenm = strlen(match);
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if (lenm > lenp)
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return false;
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bool wildcard = false;
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int wnext = -1;
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int found = -1;
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int p = 0, m = 0;
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for (; m < lenm && p < lenp; m++, p++) {
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if (match[m] == '*') {
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wildcard = true;
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wnext = m + 1;
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found = -1;
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// current host char matches automatically
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continue;
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}
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if (wildcard) {
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if (found < 0) {
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if (match[m] != path[p])
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m--;
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else
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found = p;
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} else {
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if (match[m] != path[p]) {
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// found was negated; reset cursor positions
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m = wnext;
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p = found + 1;
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found = -1;
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}
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}
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// if directory end
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if (path[p] == '/') {
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// found is here only true if match[m] = path[p] = '/'
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if (found >= 0) {
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wildcard = false;
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} else {
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return false;
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}
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}
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} else {
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if (match[m] != path[p])
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return false;
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}
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}
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// if not whole match string used, return false
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if (m != lenm)
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return false;
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return true;
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}
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#include <unistd.h>
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#include <time.h>
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handler_t ws_handler_find(webserver_t* server, const char* path, const char* host) {
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for (int i = 0; i < server->nrhandles; i++) {
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@ -135,158 +31,6 @@ handler_t ws_handler_find(webserver_t* server, const char* path, const char* hos
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return NULL;
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}
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char* ws_host_find(const char** path, headers_t headers) {
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char* host = NULL;
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for (int i = 0; i < headers.nrfields; i++) {
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header_t header = headers.fields[i];
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if (strcmp(header.key, "Host") == 0) {
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host = malloc(strlen(header.value) + 1);
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memcpy(host, header.value, strlen(header.value) + 1);
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return host;
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}
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}
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if (strlen(*path) <= strlen("http://"))
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return host;
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if ((*path)[0] == '/')
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return host;
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bool setHost = false;
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if (host == NULL) {
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setHost = true;
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host = malloc(strlen(*path) + 1);
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}
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int hposition = 0;
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int nrslash = 0;
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size_t len = strlen(*path);
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for (size_t i = 0; i < len; i++) {
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if (nrslash < 2) {
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// http://
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} else if (nrslash < 3) {
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if (setHost) {
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host[hposition++] = (*path)[i];
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/*if ((*path)[i] == ':') {
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host[hposition - 1] = '\0';
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setHost = false;
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}*/
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}
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} else {
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// rebase path
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*path = *path + i;
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break;
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}
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if ((*path)[i] == '/')
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nrslash++;
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}
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if (setHost) {
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host[hposition] = '\0';
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host = realloc(host, strlen(host) + 1);
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}
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return host;
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}
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const char* ws_strm(method_t method) {
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switch(method) {
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case OPTIONS:
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return "OPTIONS";
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case GET:
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return "GET";
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case HEAD:
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return "HEAD";
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case POST:
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return "POST";
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case PUT:
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return "PUT";
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case DELETE:
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return "DELETE";
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case TRACE:
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return "TRACE";
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case CONNECT:
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return "CONNECT";
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default:
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return "unknown method";
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}
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}
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int ws_request_parse(char* buffer, const char** path, method_t* method) {
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char lbuffer[8];
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int position = 0;
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int state = 0;
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size_t len = strlen(buffer);
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for(size_t i = 0; i < len; i++) {
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switch(state) {
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case 0: // method
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if (buffer[i] != ' ') {
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lbuffer[position++] = buffer[i];
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if (position > 7)
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return -1; // method name too long
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} else {
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state++;
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lbuffer[position] = '\0';
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if (strcmp(lbuffer, "OPTIONS") == 0)
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*method = OPTIONS;
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else if (strcmp(lbuffer, "GET") == 0)
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*method = GET;
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else if (strcmp(lbuffer, "HEAD") == 0)
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*method = HEAD;
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else if (strcmp(lbuffer, "POST") == 0)
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*method = POST;
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else if (strcmp(lbuffer, "PUT") == 0)
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*method = PUT;
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else if (strcmp(lbuffer, "DELETE") == 0)
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*method = DELETE;
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else if (strcmp(lbuffer, "TRACE") == 0)
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*method = TRACE;
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else if (strcmp(lbuffer, "CONNECT") == 0)
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*method = CONNECT;
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else
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return -2; // unknown method
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}
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break;
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case 1: // path begin
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if (buffer[i] == ' ' || buffer[i] == '\r')
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return -3; // malformed;
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*path = buffer + i;
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state++;
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break;
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case 2: // path
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if (buffer[i] == ' ') {
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buffer[i] = '\0';
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position = 0;
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state++;
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}
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break;
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case 3: // version
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if (buffer[i] != '\r') {
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lbuffer[position++] = buffer[i];
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if (position > 7)
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return -4; // version too long
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} else {
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lbuffer[position] = '\0';
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// we just support HTTP 1.0 and 1.1
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if (!strcmp(lbuffer, "HTTP/1.0"))
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return 0;
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if (!strcmp(lbuffer, "HTTP/1.1"))
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return 0;
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return -5;
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}
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break;
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default:
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assert(false);
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}
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}
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return 0;
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}
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headers_t ws_headers_create(void) {
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headers_t headers;
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headers.fields = malloc(0 * sizeof(header_t));
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@ -420,97 +164,6 @@ void ws_log(webserver_t* server, loglevel_t loglevel, const char* format, ...) {
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fprintf(server->logfile, "\n");
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}
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const char* ws_code_reason(int code) {
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switch(code) {
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case 100:
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return "Continue";
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case 101:
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return "Switching Protocols";
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case 200:
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return "OK";
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case 201:
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return "Created";
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case 202:
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return "Accepted";
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case 203:
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return "Non-Authoritative Information";
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case 204:
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return "No Content";
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case 205:
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return "Reset Content";
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case 206:
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return "Partial Content";
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case 300:
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return "Multible Choices";
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case 301:
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return "Moved Permanently";
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case 302:
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return "Found";
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case 303:
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return "See Other";
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case 304:
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return "Not Modified";
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case 305:
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return "Use Proxy";
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case 307:
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return "Temporary Redirect";
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case 400:
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return "Bad Request";
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case 401:
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return "Unauthorized";
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case 402:
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return "Payment Required";
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case 403:
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return "Forbidden";
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case 404:
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return "Not Found";
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case 405:
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return "Method Not Allowed";
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case 406:
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return "Not Acceptable";
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case 407:
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return "Proxy Authentication Required";
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case 408:
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return "Request Time-out";
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case 409:
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return "Conflict";
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case 410:
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return "Gone";
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case 411:
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return "Length Required";
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case 412:
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return "Precondition Failed";
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case 413:
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return "Request Entify Too Large";
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case 414:
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return "Request-URI Too Large";
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case 415:
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return "Unsupported Media Type";
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case 416:
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return "Requested range not satisfiable";
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case 417:
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return "Expectation Failed";
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case 500:
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return "Internal Server Error";
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case 501:
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return "Not Implemented";
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case 502:
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return "Bad Gateway";
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case 503:
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return "Service Unavailable";
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case 504:
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return "Gateway Time-out";
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case 505:
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return "HTTP Version not supported";
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default:
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return "Unknown extension code";
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}
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}
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void ws_send(int connfd, int code, headers_t headers, int pipefd) {
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stream_t connection = (stream_t) fdopen(connfd, "a+");
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@ -547,207 +200,12 @@ void ws_send(int connfd, int code, headers_t headers, int pipefd) {
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}
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void ws_simple_status(int connfd, int code) {
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ws_send(connfd, code, (headers_t) {.fields = NULL, .nrfields = 0}, -1);
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ws_send(connfd, code, (headers_t) {
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.fields = NULL,
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.nrfields = 0
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}, -1);
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}
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int ws_run_linear(webserver_t* server) {
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struct sockaddr_storage peer_addr;
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socklen_t peer_addr_len;
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int s;
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int connfd;
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char* buffer = malloc(BUFFER_SIZE * sizeof(char));
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int buffersize = 0;
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int nb = 1;
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char* header = malloc(BUFFER_SIZE * sizeof(char));
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int headersize = 0;
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int nhb = 1;
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|
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int headerlines = 0;
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|
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while (true) {
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if((connfd = accept(server->sfd, (struct sockaddr*) &peer_addr, &peer_addr_len)) < 0) {
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return -1;
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}
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|
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char phost[NI_MAXHOST], service[NI_MAXSERV];
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s = getnameinfo((struct sockaddr *) &peer_addr,
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peer_addr_len, phost, NI_MAXHOST, service,
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NI_MAXSERV, NI_NUMERICSERV);
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|
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if (s == 0)
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ws_log(server, LOG_DEBUG, "Connection from %s:%s", phost, service);
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else
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ws_log(server, LOG_DEBUG, "getnameinfo: %s", gai_strerror(s));
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|
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headers_t headers = ws_headers_create();
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char* host = NULL;
|
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method_t method;
|
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const char* path = NULL;
|
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|
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while(true) {
|
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if (read(connfd, buffer + buffersize++, 1) < 1) {
|
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ws_log(server, LOG_TESTING, "read: %s", strerror(errno));
|
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// error or disconect
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break;
|
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}
|
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|
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if (buffersize > nb * BUFFER_SIZE - 1) {
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nb++;
|
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buffer = realloc(buffer, nb * BUFFER_SIZE * sizeof(char));
|
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}
|
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|
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buffer[buffersize] = '\0';
|
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|
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if (buffer[buffersize - 1] == '\n') {
|
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ws_log(server, LOG_TESTING, "got line: %i, %s", buffersize, buffer);
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|
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// line end
|
||||
if (buffersize == 1) {
|
||||
// TODO 400
|
||||
ws_simple_status(connfd, 400);
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break;
|
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}
|
||||
if (buffer[buffersize - 2] != '\r') {
|
||||
// TODO 400
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||||
ws_simple_status(connfd, 400);
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break;
|
||||
}
|
||||
// buffer contains the line + \r\n\0
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||||
|
||||
if (buffersize == 3 - 1) { // "\r\n" + \0
|
||||
ws_log(server, LOG_TESTING, "got last header line");
|
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|
||||
if (headerlines < 1) {
|
||||
// TODO 400
|
||||
ws_simple_status(connfd, 400);
|
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break;
|
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}
|
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|
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ws_log(server, LOG_TESTING, "find host");
|
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host = ws_host_find(&path, headers);
|
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ws_log(server, LOG_DEBUG, "uri: %s%s", host, path);
|
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|
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// find handler
|
||||
ws_log(server, LOG_TESTING, "find handler");
|
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handler_t handler = ws_handler_find(server, path, host);
|
||||
|
||||
if (handler == NULL) {
|
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// TODO 404
|
||||
ws_log(server, LOG_DEBUG, "handler not found");
|
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ws_simple_status(connfd, 404);
|
||||
break;
|
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}
|
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ws_log(server, LOG_TESTING, "found");
|
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|
||||
int pipefd[2];
|
||||
|
||||
ws_log(server, LOG_TESTING, "create pipe");
|
||||
if (pipe(pipefd) < 0) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
ws_log(server, LOG_TESTING, "create response header struct");
|
||||
headers_t responseHeaders = ws_headers_create();
|
||||
ws_log(server, LOG_TESTING, "open request stream");
|
||||
stream_t request = (stream_t) fdopen(connfd, "r");
|
||||
|
||||
if (request == NULL) {
|
||||
ws_log(server, LOG_DEBUG, "fdopen: %s", strerror(errno));
|
||||
}
|
||||
|
||||
//fopen write end of pipe
|
||||
ws_log(server, LOG_TESTING, "open pipe stream");
|
||||
stream_t response = (stream_t) fdopen(pipefd[1], "w");
|
||||
|
||||
if (response == NULL) {
|
||||
ws_log(server, LOG_DEBUG, "fdopen: %s", strerror(errno));
|
||||
}
|
||||
|
||||
// unbuffer
|
||||
setbuf(request, NULL);
|
||||
|
||||
// handler
|
||||
ws_log(server, LOG_DEBUG, "execute handler");
|
||||
int code = (*handler)(method, host, path, headers, &responseHeaders, request, response);
|
||||
ws_log(server, LOG_TESTING, "handler finished with %i", code);
|
||||
|
||||
fclose(response);
|
||||
|
||||
// send
|
||||
ws_log(server, LOG_TESTING, "sending response");
|
||||
ws_send(connfd, code, responseHeaders, pipefd[0]);
|
||||
|
||||
// cleanup
|
||||
ws_log(server, LOG_DEBUG, "cleanup");
|
||||
close(pipefd[0]);
|
||||
fclose(request);
|
||||
ws_headers_free(&responseHeaders);
|
||||
|
||||
ws_log(server, LOG_TESTING, "done");
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
ws_log(server, LOG_TESTING, "enlarging header buffer");
|
||||
while (headersize + buffersize + 1 > nhb * BUFFER_SIZE) {
|
||||
nhb++;
|
||||
header = realloc(header, nhb * BUFFER_SIZE * sizeof(char));
|
||||
}
|
||||
|
||||
memcpy(header + headersize, buffer, buffersize + 1);
|
||||
header[headersize + buffersize] = '\0';
|
||||
// new line is now permanently saved in header + headersize
|
||||
|
||||
if (headerlines++ == 0) {
|
||||
ws_log(server, LOG_TESTING, "parsing first line");
|
||||
int e;
|
||||
if ((e = ws_request_parse(header + headersize, &path, &method)) < 0) {
|
||||
ws_log(server, LOG_DEBUG, "parsing error: %i", e);
|
||||
// TODO 400
|
||||
ws_simple_status(connfd, 400);
|
||||
break;
|
||||
}
|
||||
ws_log(server, LOG_TESTING, "path: %s", path);
|
||||
} else {
|
||||
// convert to header struct
|
||||
ws_log(server, LOG_TESTING, "convert line to headerstruct");
|
||||
ws_headers_convert(&headers, header + headersize);
|
||||
ws_log(server, LOG_DEBUG, "header: %s: %s", headers.fields[headers.nrfields - 1].key,
|
||||
headers.fields[headers.nrfields - 1].value);
|
||||
}
|
||||
headersize += buffersize + 1;
|
||||
|
||||
ws_log(server, LOG_TESTING, "reset buffer");
|
||||
buffer = realloc(buffer, BUFFER_SIZE * sizeof(char));
|
||||
nb = 1;
|
||||
buffersize = 0;
|
||||
}
|
||||
}
|
||||
|
||||
header = realloc(header, BUFFER_SIZE * sizeof(char));
|
||||
nhb = 1;
|
||||
headersize = 0;
|
||||
|
||||
headerlines = 0;
|
||||
|
||||
ws_headers_free(&headers);
|
||||
|
||||
if (host != NULL) {
|
||||
free(host);
|
||||
host = NULL;
|
||||
}
|
||||
|
||||
buffer = realloc(buffer, BUFFER_SIZE * sizeof(char));
|
||||
nb = 1;
|
||||
buffersize = 0;
|
||||
}
|
||||
|
||||
free(buffer);
|
||||
free(header);
|
||||
}
|
||||
|
||||
int ws_run(webserver_t* server) {
|
||||
switch(server->options.mode) {
|
||||
|
|
|
|||
104
webserver.h
104
webserver.h
|
|
@ -1,6 +1,8 @@
|
|||
#ifndef WEBSERVER_H
|
||||
#define WEBSERVER_H
|
||||
|
||||
#include "ws_types.h"
|
||||
#include "ws_modes.h"
|
||||
#include <stdio.h>
|
||||
#include <stdbool.h>
|
||||
|
||||
|
|
@ -9,111 +11,21 @@
|
|||
#define WS_VERSION "0.1"
|
||||
#define WS_NAME "SERWER"
|
||||
|
||||
|
||||
|
||||
typedef struct header {
|
||||
const char* key;
|
||||
const char* value;
|
||||
} header_t;
|
||||
|
||||
typedef struct headers {
|
||||
header_t* fields;
|
||||
int nrfields;
|
||||
} headers_t;
|
||||
|
||||
typedef FILE* stream_t;
|
||||
|
||||
typedef int loglevel_t;
|
||||
|
||||
#define LOG_TESTING 11
|
||||
#define LOG_DEBUG 10
|
||||
#define LOG_VERBOSE 5
|
||||
#define LOG_WARN 2
|
||||
#define LOG_ERROR 0
|
||||
|
||||
#define ANY NULL
|
||||
|
||||
typedef enum method {
|
||||
OPTIONS,
|
||||
GET,
|
||||
HEAD,
|
||||
POST,
|
||||
PUT,
|
||||
DELETE,
|
||||
TRACE,
|
||||
CONNECT
|
||||
} method_t;
|
||||
|
||||
typedef int(*handler_t)(method_t method, const char* host, const char* path, headers_t requestHeaders,
|
||||
headers_t* responseHeaders, stream_t request, stream_t response);
|
||||
|
||||
typedef struct handle {
|
||||
const char* path;
|
||||
const char* host;
|
||||
handler_t handler;
|
||||
} handle_t;
|
||||
|
||||
typedef enum mode {
|
||||
//PRE_FORKED,
|
||||
//POST_FORKED,
|
||||
//STATEFULL,
|
||||
//THREADED,
|
||||
LINEAR
|
||||
} srvmode_t;
|
||||
|
||||
typedef struct srvoptions {
|
||||
srvmode_t mode;
|
||||
int timeout;
|
||||
int maxconnections;
|
||||
loglevel_t loglevel;
|
||||
} srvoptions_t;
|
||||
|
||||
typedef struct webserver {
|
||||
const char* name;
|
||||
int sfd;
|
||||
const char* host;
|
||||
const char* port;
|
||||
handle_t* handles;
|
||||
int nrhandles;
|
||||
FILE* logfile;
|
||||
srvoptions_t options;
|
||||
} webserver_t;
|
||||
|
||||
bool ws_host_match(const char*, const char*);
|
||||
bool ws_path_match(const char*, const char*);
|
||||
|
||||
handler_t ws_handler_find(webserver_t*, const char*, const char*);
|
||||
|
||||
char* ws_host_find(const char**, headers_t);
|
||||
|
||||
const char* ws_strm(method_t);
|
||||
|
||||
int ws_request_parse(char*, const char**, method_t*);
|
||||
|
||||
headers_t ws_headers_create(void);
|
||||
|
||||
void ws_headers_add(headers_t*, const char*, const char*);
|
||||
|
||||
void ws_headers_convert(headers_t*, char*);
|
||||
|
||||
void ws_headers_free(headers_t*);
|
||||
|
||||
int ws_listen(webserver_t*);
|
||||
|
||||
void ws_handle_add(webserver_t*, handle_t);
|
||||
handler_t ws_handler_find(webserver_t*, const char*, const char*);
|
||||
|
||||
void ws_send(int, int, headers_t, int);
|
||||
void ws_simple_status(int, int);
|
||||
|
||||
webserver_t ws_create(const char*, const char*, const char*, FILE*, srvoptions_t);
|
||||
int ws_listen(webserver_t*);
|
||||
int ws_run(webserver_t*);
|
||||
|
||||
void ws_log(webserver_t*, loglevel_t, const char*, ...);
|
||||
|
||||
const char* ws_code_reason(int);
|
||||
|
||||
void ws_send(int, int, headers_t, int);
|
||||
|
||||
void ws_simple_status(int, int);
|
||||
|
||||
int ws_run_linear(webserver_t*);
|
||||
|
||||
int ws_run(webserver_t*);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
213
ws_linear.c
Normal file
213
ws_linear.c
Normal file
|
|
@ -0,0 +1,213 @@
|
|||
#include "webserver.h"
|
||||
#include "ws_types.h"
|
||||
#include "ws_modes.h"
|
||||
#include "ws_utils.h"
|
||||
|
||||
#include <errno.h>
|
||||
#include <stdlib.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/socket.h>
|
||||
#include <netdb.h>
|
||||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
|
||||
int ws_run_linear(webserver_t* server) {
|
||||
struct sockaddr_storage peer_addr;
|
||||
socklen_t peer_addr_len;
|
||||
int s;
|
||||
int connfd;
|
||||
|
||||
char* buffer = malloc(BUFFER_SIZE * sizeof(char));
|
||||
int buffersize = 0;
|
||||
int nb = 1;
|
||||
|
||||
char* header = malloc(BUFFER_SIZE * sizeof(char));
|
||||
int headersize = 0;
|
||||
int nhb = 1;
|
||||
|
||||
int headerlines = 0;
|
||||
|
||||
while (true) {
|
||||
if((connfd = accept(server->sfd, (struct sockaddr*) &peer_addr, &peer_addr_len)) < 0) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
char phost[NI_MAXHOST], service[NI_MAXSERV];
|
||||
|
||||
s = getnameinfo((struct sockaddr *) &peer_addr,
|
||||
peer_addr_len, phost, NI_MAXHOST, service,
|
||||
NI_MAXSERV, NI_NUMERICSERV);
|
||||
|
||||
if (s == 0)
|
||||
ws_log(server, LOG_DEBUG, "Connection from %s:%s", phost, service);
|
||||
else
|
||||
ws_log(server, LOG_DEBUG, "getnameinfo: %s", gai_strerror(s));
|
||||
|
||||
headers_t headers = ws_headers_create();
|
||||
char* host = NULL;
|
||||
method_t method;
|
||||
const char* path = NULL;
|
||||
|
||||
while(true) {
|
||||
if (read(connfd, buffer + buffersize++, 1) < 1) {
|
||||
ws_log(server, LOG_TESTING, "read: %s", strerror(errno));
|
||||
// error or disconect
|
||||
break;
|
||||
}
|
||||
|
||||
if (buffersize > nb * BUFFER_SIZE - 1) {
|
||||
nb++;
|
||||
buffer = realloc(buffer, nb * BUFFER_SIZE * sizeof(char));
|
||||
}
|
||||
|
||||
buffer[buffersize] = '\0';
|
||||
|
||||
if (buffer[buffersize - 1] == '\n') {
|
||||
ws_log(server, LOG_TESTING, "got line: %i, %s", buffersize, buffer);
|
||||
|
||||
// line end
|
||||
if (buffersize == 1) {
|
||||
// TODO 400
|
||||
ws_simple_status(connfd, 400);
|
||||
break;
|
||||
}
|
||||
if (buffer[buffersize - 2] != '\r') {
|
||||
// TODO 400
|
||||
ws_simple_status(connfd, 400);
|
||||
break;
|
||||
}
|
||||
// buffer contains the line + \r\n\0
|
||||
|
||||
if (buffersize == 3 - 1) { // "\r\n" + \0
|
||||
ws_log(server, LOG_TESTING, "got last header line");
|
||||
|
||||
if (headerlines < 1) {
|
||||
// TODO 400
|
||||
ws_simple_status(connfd, 400);
|
||||
break;
|
||||
}
|
||||
|
||||
ws_log(server, LOG_TESTING, "find host");
|
||||
host = ws_host_find(&path, headers);
|
||||
ws_log(server, LOG_DEBUG, "uri: %s%s", host, path);
|
||||
|
||||
// find handler
|
||||
ws_log(server, LOG_TESTING, "find handler");
|
||||
handler_t handler = ws_handler_find(server, path, host);
|
||||
|
||||
if (handler == NULL) {
|
||||
// TODO 404
|
||||
ws_log(server, LOG_DEBUG, "handler not found");
|
||||
ws_simple_status(connfd, 404);
|
||||
break;
|
||||
}
|
||||
ws_log(server, LOG_TESTING, "found");
|
||||
|
||||
int pipefd[2];
|
||||
|
||||
ws_log(server, LOG_TESTING, "create pipe");
|
||||
if (pipe(pipefd) < 0) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
ws_log(server, LOG_TESTING, "create response header struct");
|
||||
headers_t responseHeaders = ws_headers_create();
|
||||
ws_log(server, LOG_TESTING, "open request stream");
|
||||
stream_t request = (stream_t) fdopen(connfd, "r");
|
||||
|
||||
if (request == NULL) {
|
||||
ws_log(server, LOG_DEBUG, "fdopen: %s", strerror(errno));
|
||||
}
|
||||
|
||||
//fopen write end of pipe
|
||||
ws_log(server, LOG_TESTING, "open pipe stream");
|
||||
stream_t response = (stream_t) fdopen(pipefd[1], "w");
|
||||
|
||||
if (response == NULL) {
|
||||
ws_log(server, LOG_DEBUG, "fdopen: %s", strerror(errno));
|
||||
}
|
||||
|
||||
// unbuffer
|
||||
setbuf(request, NULL);
|
||||
|
||||
// handler
|
||||
ws_log(server, LOG_DEBUG, "execute handler");
|
||||
int code = (*handler)(method, host, path, headers, &responseHeaders, request, response);
|
||||
ws_log(server, LOG_TESTING, "handler finished with %i", code);
|
||||
|
||||
fclose(response);
|
||||
|
||||
// send
|
||||
ws_log(server, LOG_TESTING, "sending response");
|
||||
ws_send(connfd, code, responseHeaders, pipefd[0]);
|
||||
|
||||
// cleanup
|
||||
ws_log(server, LOG_DEBUG, "cleanup");
|
||||
close(pipefd[0]);
|
||||
fclose(request);
|
||||
ws_headers_free(&responseHeaders);
|
||||
|
||||
ws_log(server, LOG_TESTING, "done");
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
ws_log(server, LOG_TESTING, "enlarging header buffer");
|
||||
while (headersize + buffersize + 1 > nhb * BUFFER_SIZE) {
|
||||
nhb++;
|
||||
header = realloc(header, nhb * BUFFER_SIZE * sizeof(char));
|
||||
}
|
||||
|
||||
memcpy(header + headersize, buffer, buffersize + 1);
|
||||
header[headersize + buffersize] = '\0';
|
||||
// new line is now permanently saved in header + headersize
|
||||
|
||||
if (headerlines++ == 0) {
|
||||
ws_log(server, LOG_TESTING, "parsing first line");
|
||||
int e;
|
||||
if ((e = ws_request_parse(header + headersize, &path, &method)) < 0) {
|
||||
ws_log(server, LOG_DEBUG, "parsing error: %i", e);
|
||||
// TODO 400
|
||||
ws_simple_status(connfd, 400);
|
||||
break;
|
||||
}
|
||||
ws_log(server, LOG_TESTING, "path: %s", path);
|
||||
} else {
|
||||
// convert to header struct
|
||||
ws_log(server, LOG_TESTING, "convert line to headerstruct");
|
||||
ws_headers_convert(&headers, header + headersize);
|
||||
ws_log(server, LOG_DEBUG, "header: %s: %s", headers.fields[headers.nrfields - 1].key,
|
||||
headers.fields[headers.nrfields - 1].value);
|
||||
}
|
||||
headersize += buffersize + 1;
|
||||
|
||||
ws_log(server, LOG_TESTING, "reset buffer");
|
||||
buffer = realloc(buffer, BUFFER_SIZE * sizeof(char));
|
||||
nb = 1;
|
||||
buffersize = 0;
|
||||
}
|
||||
}
|
||||
|
||||
header = realloc(header, BUFFER_SIZE * sizeof(char));
|
||||
nhb = 1;
|
||||
headersize = 0;
|
||||
|
||||
headerlines = 0;
|
||||
|
||||
ws_headers_free(&headers);
|
||||
|
||||
if (host != NULL) {
|
||||
free(host);
|
||||
host = NULL;
|
||||
}
|
||||
|
||||
buffer = realloc(buffer, BUFFER_SIZE * sizeof(char));
|
||||
nb = 1;
|
||||
buffersize = 0;
|
||||
}
|
||||
|
||||
free(buffer);
|
||||
free(header);
|
||||
}
|
||||
8
ws_modes.h
Normal file
8
ws_modes.h
Normal file
|
|
@ -0,0 +1,8 @@
|
|||
#ifndef WS_MODES_H
|
||||
#define WS_MODES_H
|
||||
|
||||
#include "ws_types.h"
|
||||
|
||||
int ws_run_linear(webserver_t*);
|
||||
|
||||
#endif
|
||||
74
ws_types.h
Normal file
74
ws_types.h
Normal file
|
|
@ -0,0 +1,74 @@
|
|||
#ifndef WS_TYPES_H
|
||||
#define WS_TYPES_H
|
||||
|
||||
#include <stdio.h>
|
||||
|
||||
typedef struct header {
|
||||
const char* key;
|
||||
const char* value;
|
||||
} header_t;
|
||||
|
||||
typedef struct headers {
|
||||
header_t* fields;
|
||||
int nrfields;
|
||||
} headers_t;
|
||||
|
||||
typedef FILE* stream_t;
|
||||
|
||||
typedef int loglevel_t;
|
||||
|
||||
#define LOG_TESTING 11
|
||||
#define LOG_DEBUG 10
|
||||
#define LOG_VERBOSE 5
|
||||
#define LOG_WARN 2
|
||||
#define LOG_ERROR 0
|
||||
|
||||
#define ANY NULL
|
||||
|
||||
typedef enum method {
|
||||
OPTIONS,
|
||||
GET,
|
||||
HEAD,
|
||||
POST,
|
||||
PUT,
|
||||
DELETE,
|
||||
TRACE,
|
||||
CONNECT
|
||||
} method_t;
|
||||
|
||||
typedef int(*handler_t)(method_t method, const char* host, const char* path, headers_t requestHeaders,
|
||||
headers_t* responseHeaders, stream_t request, stream_t response);
|
||||
|
||||
typedef struct handle {
|
||||
const char* path;
|
||||
const char* host;
|
||||
handler_t handler;
|
||||
} handle_t;
|
||||
|
||||
typedef enum mode {
|
||||
//PRE_FORKED,
|
||||
//POST_FORKED,
|
||||
//STATEFULL,
|
||||
//THREADED,
|
||||
LINEAR
|
||||
} srvmode_t;
|
||||
|
||||
typedef struct srvoptions {
|
||||
srvmode_t mode;
|
||||
int timeout;
|
||||
int maxconnections;
|
||||
loglevel_t loglevel;
|
||||
} srvoptions_t;
|
||||
|
||||
typedef struct webserver {
|
||||
const char* name;
|
||||
int sfd;
|
||||
const char* host;
|
||||
const char* port;
|
||||
handle_t* handles;
|
||||
int nrhandles;
|
||||
FILE* logfile;
|
||||
srvoptions_t options;
|
||||
} webserver_t;
|
||||
|
||||
#endif
|
||||
363
ws_utils.c
Normal file
363
ws_utils.c
Normal file
|
|
@ -0,0 +1,363 @@
|
|||
#include "webserver.h"
|
||||
#include "ws_types.h"
|
||||
#include "ws_utils.h"
|
||||
|
||||
#include <assert.h>
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
method_t ws_meth(const char* string) {
|
||||
if (strcmp(string, "OPTIONS") == 0)
|
||||
return OPTIONS;
|
||||
else if (strcmp(string, "GET") == 0)
|
||||
return GET;
|
||||
else if (strcmp(string, "HEAD") == 0)
|
||||
return HEAD;
|
||||
else if (strcmp(string, "POST") == 0)
|
||||
return POST;
|
||||
else if (strcmp(string, "PUT") == 0)
|
||||
return PUT;
|
||||
else if (strcmp(string, "DELETE") == 0)
|
||||
return DELETE;
|
||||
else if (strcmp(string, "TRACE") == 0)
|
||||
return TRACE;
|
||||
else if (strcmp(string, "CONNECT") == 0)
|
||||
return CONNECT;
|
||||
else
|
||||
return -1; // unknown method
|
||||
}
|
||||
|
||||
const char* ws_strm(method_t method) {
|
||||
switch(method) {
|
||||
case OPTIONS:
|
||||
return "OPTIONS";
|
||||
case GET:
|
||||
return "GET";
|
||||
case HEAD:
|
||||
return "HEAD";
|
||||
case POST:
|
||||
return "POST";
|
||||
case PUT:
|
||||
return "PUT";
|
||||
case DELETE:
|
||||
return "DELETE";
|
||||
case TRACE:
|
||||
return "TRACE";
|
||||
case CONNECT:
|
||||
return "CONNECT";
|
||||
default:
|
||||
return "unknown method";
|
||||
}
|
||||
}
|
||||
|
||||
const char* ws_code_reason(int code) {
|
||||
switch(code) {
|
||||
case 100:
|
||||
return "Continue";
|
||||
case 101:
|
||||
return "Switching Protocols";
|
||||
case 200:
|
||||
return "OK";
|
||||
|
||||
case 201:
|
||||
return "Created";
|
||||
case 202:
|
||||
return "Accepted";
|
||||
case 203:
|
||||
return "Non-Authoritative Information";
|
||||
case 204:
|
||||
return "No Content";
|
||||
case 205:
|
||||
return "Reset Content";
|
||||
case 206:
|
||||
return "Partial Content";
|
||||
|
||||
case 300:
|
||||
return "Multible Choices";
|
||||
case 301:
|
||||
return "Moved Permanently";
|
||||
case 302:
|
||||
return "Found";
|
||||
case 303:
|
||||
return "See Other";
|
||||
case 304:
|
||||
return "Not Modified";
|
||||
case 305:
|
||||
return "Use Proxy";
|
||||
case 307:
|
||||
return "Temporary Redirect";
|
||||
|
||||
case 400:
|
||||
return "Bad Request";
|
||||
case 401:
|
||||
return "Unauthorized";
|
||||
case 402:
|
||||
return "Payment Required";
|
||||
case 403:
|
||||
return "Forbidden";
|
||||
case 404:
|
||||
return "Not Found";
|
||||
case 405:
|
||||
return "Method Not Allowed";
|
||||
case 406:
|
||||
return "Not Acceptable";
|
||||
case 407:
|
||||
return "Proxy Authentication Required";
|
||||
case 408:
|
||||
return "Request Time-out";
|
||||
case 409:
|
||||
return "Conflict";
|
||||
case 410:
|
||||
return "Gone";
|
||||
case 411:
|
||||
return "Length Required";
|
||||
case 412:
|
||||
return "Precondition Failed";
|
||||
case 413:
|
||||
return "Request Entify Too Large";
|
||||
case 414:
|
||||
return "Request-URI Too Large";
|
||||
case 415:
|
||||
return "Unsupported Media Type";
|
||||
case 416:
|
||||
return "Requested range not satisfiable";
|
||||
case 417:
|
||||
return "Expectation Failed";
|
||||
|
||||
case 500:
|
||||
return "Internal Server Error";
|
||||
case 501:
|
||||
return "Not Implemented";
|
||||
case 502:
|
||||
return "Bad Gateway";
|
||||
case 503:
|
||||
return "Service Unavailable";
|
||||
case 504:
|
||||
return "Gateway Time-out";
|
||||
case 505:
|
||||
return "HTTP Version not supported";
|
||||
default:
|
||||
return "Unknown extension code";
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
bool ws_host_match(const char* host, const char* match) {
|
||||
// only two possible positions for wildcard: begin and end
|
||||
int lenh = strlen(host);
|
||||
int lenm = strlen(match);
|
||||
|
||||
if (lenm > lenh)
|
||||
return false;
|
||||
|
||||
bool wildcard = false;
|
||||
int wnext = -1;
|
||||
int found = -1;
|
||||
|
||||
int h = 0, m = 0;
|
||||
for (; m < lenm && h < lenh; m++, h++) {
|
||||
if (match[m] == '*') {
|
||||
wildcard = true;
|
||||
wnext = m + 1;
|
||||
found = -1;
|
||||
// current host char matches automatically
|
||||
continue;
|
||||
}
|
||||
|
||||
if (wildcard) {
|
||||
if (found == -1) {
|
||||
if (match[m] != host[h])
|
||||
m--;
|
||||
else
|
||||
found = h;
|
||||
} else {
|
||||
if (match[m] != host[h]) {
|
||||
// found was negated; reset cursor positions
|
||||
m = wnext;
|
||||
h = found + 1;
|
||||
found = -1;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if (match[m] != host[h])
|
||||
return false;
|
||||
}
|
||||
}
|
||||
// if not whole match string matches, return false
|
||||
if (m != lenm)
|
||||
return false;
|
||||
return true;
|
||||
}
|
||||
|
||||
bool ws_path_match(const char* path, const char* match) {
|
||||
int lenp = strlen(path);
|
||||
int lenm = strlen(match);
|
||||
|
||||
if (lenm > lenp)
|
||||
return false;
|
||||
|
||||
bool wildcard = false;
|
||||
int wnext = -1;
|
||||
int found = -1;
|
||||
|
||||
int p = 0, m = 0;
|
||||
for (; m < lenm && p < lenp; m++, p++) {
|
||||
if (match[m] == '*') {
|
||||
wildcard = true;
|
||||
wnext = m + 1;
|
||||
found = -1;
|
||||
// current host char matches automatically
|
||||
continue;
|
||||
}
|
||||
|
||||
if (wildcard) {
|
||||
if (found < 0) {
|
||||
if (match[m] != path[p])
|
||||
m--;
|
||||
else
|
||||
found = p;
|
||||
} else {
|
||||
if (match[m] != path[p]) {
|
||||
// found was negated; reset cursor positions
|
||||
m = wnext;
|
||||
p = found + 1;
|
||||
found = -1;
|
||||
}
|
||||
}
|
||||
|
||||
// if directory end
|
||||
if (path[p] == '/') {
|
||||
// found is here only true if match[m] = path[p] = '/'
|
||||
if (found >= 0) {
|
||||
wildcard = false;
|
||||
} else {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if (match[m] != path[p])
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
// if not whole match string used, return false
|
||||
if (m != lenm)
|
||||
return false;
|
||||
return true;
|
||||
}
|
||||
|
||||
int ws_request_parse(char* buffer, const char** path, method_t* method) {
|
||||
char lbuffer[9];
|
||||
int position = 0;
|
||||
|
||||
int state = 0;
|
||||
|
||||
size_t len = strlen(buffer);
|
||||
for(size_t i = 0; i < len; i++) {
|
||||
switch(state) {
|
||||
case 0: // method
|
||||
if (buffer[i] != ' ') {
|
||||
lbuffer[position++] = buffer[i];
|
||||
if (position > 7)
|
||||
return -1; // method name too long
|
||||
} else {
|
||||
state++;
|
||||
lbuffer[position] = '\0';
|
||||
*method = ws_meth(lbuffer);
|
||||
if (*method < 0)
|
||||
return -2; // unknown method
|
||||
}
|
||||
break;
|
||||
case 1: // path begin
|
||||
if (buffer[i] == ' ' || buffer[i] == '\r')
|
||||
return -3; // malformed;
|
||||
*path = buffer + i;
|
||||
state++;
|
||||
break;
|
||||
case 2: // path
|
||||
if (buffer[i] == ' ') {
|
||||
buffer[i] = '\0';
|
||||
position = 0;
|
||||
state++;
|
||||
}
|
||||
break;
|
||||
case 3: // version
|
||||
if (buffer[i] != '\r') {
|
||||
lbuffer[position++] = buffer[i];
|
||||
if (position > 8)
|
||||
return -4; // version too long
|
||||
} else {
|
||||
lbuffer[position] = '\0';
|
||||
|
||||
// we just support HTTP 1.0 and 1.1
|
||||
if (!strcmp(lbuffer, "HTTP/1.0"))
|
||||
return 0;
|
||||
if (!strcmp(lbuffer, "HTTP/1.1"))
|
||||
return 0;
|
||||
|
||||
return -5;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
assert(false);
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
char* ws_host_find(const char** path, headers_t headers) {
|
||||
char* host = NULL;
|
||||
for (int i = 0; i < headers.nrfields; i++) {
|
||||
header_t header = headers.fields[i];
|
||||
if (strcmp(header.key, "Host") == 0) {
|
||||
host = malloc(strlen(header.value) + 1);
|
||||
memcpy(host, header.value, strlen(header.value) + 1);
|
||||
return host;
|
||||
}
|
||||
}
|
||||
|
||||
if (strlen(*path) <= strlen("http://"))
|
||||
return host;
|
||||
if ((*path)[0] == '/')
|
||||
return host;
|
||||
|
||||
bool setHost = false;
|
||||
|
||||
if (host == NULL) {
|
||||
setHost = true;
|
||||
host = malloc(strlen(*path) + 1);
|
||||
}
|
||||
int hposition = 0;
|
||||
|
||||
int nrslash = 0;
|
||||
|
||||
size_t len = strlen(*path);
|
||||
for (size_t i = 0; i < len; i++) {
|
||||
if (nrslash < 2) {
|
||||
// http://
|
||||
} else if (nrslash < 3) {
|
||||
if (setHost) {
|
||||
host[hposition++] = (*path)[i];
|
||||
/*if ((*path)[i] == ':') {
|
||||
host[hposition - 1] = '\0';
|
||||
setHost = false;
|
||||
}*/
|
||||
}
|
||||
} else {
|
||||
// rebase path
|
||||
*path = *path + i;
|
||||
break;
|
||||
}
|
||||
|
||||
if ((*path)[i] == '/')
|
||||
nrslash++;
|
||||
}
|
||||
if (setHost) {
|
||||
host[hposition] = '\0';
|
||||
host = realloc(host, strlen(host) + 1);
|
||||
}
|
||||
|
||||
return host;
|
||||
}
|
||||
|
||||
17
ws_utils.h
Normal file
17
ws_utils.h
Normal file
|
|
@ -0,0 +1,17 @@
|
|||
#ifndef WS_UTILS_H
|
||||
#define WS_UTILS_H
|
||||
|
||||
#include "ws_types.h"
|
||||
|
||||
method_t ws_meth(const char*);
|
||||
const char* ws_strm(method_t);
|
||||
const char* ws_code_reason(int);
|
||||
|
||||
bool ws_host_match(const char*, const char*);
|
||||
bool ws_path_match(const char*, const char*);
|
||||
|
||||
int ws_request_parse(char*, const char**, method_t*);
|
||||
|
||||
char* ws_host_find(const char**, headers_t);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in a new issue