int inFd;
int outFd;
int firstLine = 1;
+ int status;
+ size_t post_readed_size, post_readed_idx;
if (pipe(fromCgi) != 0)
return 0;
if (pipe(toCgi) != 0)
return 0;
+
pid = fork();
if (pid < 0)
return 0;
+
+ if (!pid) {
+ /* child process */
+ char *script;
+ char *purl = strdup(url);
+ char realpath_buff[MAXPATHLEN];
+
+ if (purl == NULL)
+ _exit(242);
- do {
- if (!pid) {
- /* child process */
- char *script;
- char *purl = strdup(url);
- char realpath_buff[MAXPATHLEN];
-
- if (purl == NULL)
- _exit(242);
-
- inFd = toCgi[0];
- outFd = fromCgi[1];
-
- dup2(inFd, 0); // replace stdin with the pipe
- dup2(outFd, 1); // replace stdout with the pipe
- if (!DEBUG)
- dup2(outFd, 2); // replace stderr with the pipe
-
- close(toCgi[0]);
- close(toCgi[1]);
- close(fromCgi[0]);
- close(fromCgi[1]);
-
- close(config->accepted_socket);
- close(config->server_socket);
-
- /*
- * Find PATH_INFO.
- */
- script = purl;
- while ((script = strchr(script + 1, '/')) != NULL) {
- /* have script.cgi/PATH_INFO or dirs/script.cgi[/PATH_INFO] */
- struct stat sb;
-
- *script = '\0';
- if (is_directory(purl + 1, 1, &sb) == 0) {
- /* not directory, found script.cgi/PATH_INFO */
- *script = '/';
- break;
- }
- *script = '/'; /* is directory, find next '/' */
- }
- setenv1("PATH_INFO", script); /* set /PATH_INFO or "" */
- /* setenv1("PATH", getenv("PATH")); redundant */
- setenv1("REQUEST_METHOD", request);
- if (config->query) {
- char *uri = alloca(strlen(purl) + 2 + strlen(config->query));
- if (uri)
- sprintf(uri, "%s?%s", purl, config->query);
- setenv1("REQUEST_URI", uri);
- } else {
- setenv1("REQUEST_URI", purl);
+ inFd = toCgi[0];
+ outFd = fromCgi[1];
+
+ dup2(inFd, 0); // replace stdin with the pipe
+ dup2(outFd, 1); // replace stdout with the pipe
+ if (!DEBUG)
+ dup2(outFd, 2); // replace stderr with the pipe
+
+ close(toCgi[0]);
+ close(toCgi[1]);
+ close(fromCgi[0]);
+ close(fromCgi[1]);
+
+ close(config->accepted_socket);
+ close(config->server_socket);
+
+ /*
+ * Find PATH_INFO.
+ */
+ script = purl;
+ while ((script = strchr(script + 1, '/')) != NULL) {
+ /* have script.cgi/PATH_INFO or dirs/script.cgi[/PATH_INFO] */
+ struct stat sb;
+
+ *script = '\0';
+ if (is_directory(purl + 1, 1, &sb) == 0) {
+ /* not directory, found script.cgi/PATH_INFO */
+ *script = '/';
+ break;
}
- if (script != NULL)
- *script = '\0'; /* reduce /PATH_INFO */
- /* SCRIPT_FILENAME required by PHP in CGI mode */
- if (!realpath(purl + 1, realpath_buff))
- goto error_execing_cgi;
- setenv1("SCRIPT_FILENAME", realpath_buff);
- /* set SCRIPT_NAME as full path: /cgi-bin/dirs/script.cgi */
- setenv1("SCRIPT_NAME", purl);
- setenv1("QUERY_STRING", config->query);
- setenv1("SERVER_SOFTWARE", httpdVersion);
- putenv("SERVER_PROTOCOL=HTTP/1.0");
- putenv("GATEWAY_INTERFACE=CGI/1.1");
- setenv1("REMOTE_ADDR", config->rmt_ip_str);
+ *script = '/'; /* is directory, find next '/' */
+ }
+ setenv1("PATH_INFO", script); /* set /PATH_INFO or "" */
+ /* setenv1("PATH", getenv("PATH")); redundant */
+ setenv1("REQUEST_METHOD", request);
+ if (config->query) {
+ char *uri = alloca(strlen(purl) + 2 + strlen(config->query));
+ if (uri)
+ sprintf(uri, "%s?%s", purl, config->query);
+ setenv1("REQUEST_URI", uri);
+ } else {
+ setenv1("REQUEST_URI", purl);
+ }
+ if (script != NULL)
+ *script = '\0'; /* reduce /PATH_INFO */
+ /* SCRIPT_FILENAME required by PHP in CGI mode */
+ if (!realpath(purl + 1, realpath_buff))
+ goto error_execing_cgi;
+ setenv1("SCRIPT_FILENAME", realpath_buff);
+ /* set SCRIPT_NAME as full path: /cgi-bin/dirs/script.cgi */
+ setenv1("SCRIPT_NAME", purl);
+ setenv1("QUERY_STRING", config->query);
+ setenv1("SERVER_SOFTWARE", httpdVersion);
+ putenv("SERVER_PROTOCOL=HTTP/1.0");
+ putenv("GATEWAY_INTERFACE=CGI/1.1");
+ setenv1("REMOTE_ADDR", config->rmt_ip_str);
#if ENABLE_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
- setenv_long("REMOTE_PORT", config->port);
+ setenv_long("REMOTE_PORT", config->port);
#endif
- if (bodyLen)
- setenv_long("CONTENT_LENGTH", bodyLen);
- if (cookie)
- setenv1("HTTP_COOKIE", cookie);
- if (content_type)
- setenv1("CONTENT_TYPE", content_type);
+ if (bodyLen)
+ setenv_long("CONTENT_LENGTH", bodyLen);
+ if (cookie)
+ setenv1("HTTP_COOKIE", cookie);
+ if (content_type)
+ setenv1("CONTENT_TYPE", content_type);
#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
- if (config->remoteuser) {
- setenv1("REMOTE_USER", config->remoteuser);
- putenv("AUTH_TYPE=Basic");
- }
+ if (config->remoteuser) {
+ setenv1("REMOTE_USER", config->remoteuser);
+ putenv("AUTH_TYPE=Basic");
+ }
#endif
- if (config->referer)
- setenv1("HTTP_REFERER", config->referer);
-
- /* set execve argp[0] without path */
- argp[0] = strrchr(purl, '/') + 1;
- /* but script argp[0] must have absolute path and chdiring to this */
- script = strrchr(realpath_buff, '/');
- if (!script)
- goto error_execing_cgi;
- *script = '\0';
- if (chdir(realpath_buff) == 0) {
- // now run the program. If it fails,
- // use _exit() so no destructors
- // get called and make a mess.
+ if (config->referer)
+ setenv1("HTTP_REFERER", config->referer);
+
+ /* set execve argp[0] without path */
+ argp[0] = strrchr(purl, '/') + 1;
+ /* but script argp[0] must have absolute path and chdiring to this */
+ script = strrchr(realpath_buff, '/');
+ if (!script)
+ goto error_execing_cgi;
+ *script = '\0';
+ if (chdir(realpath_buff) == 0) {
+ // now run the program. If it fails,
+ // use _exit() so no destructors
+ // get called and make a mess.
#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
- char *interpr = NULL;
- char *suffix = strrchr(purl, '.');
-
- if (suffix) {
- Htaccess *cur;
- for (cur = config->script_i; cur; cur = cur->next) {
- if (strcmp(cur->before_colon + 1, suffix) == 0) {
- interpr = cur->after_colon;
- break;
- }
+ char *interpr = NULL;
+ char *suffix = strrchr(purl, '.');
+
+ if (suffix) {
+ Htaccess *cur;
+ for (cur = config->script_i; cur; cur = cur->next) {
+ if (strcmp(cur->before_colon + 1, suffix) == 0) {
+ interpr = cur->after_colon;
+ break;
}
}
+ }
#endif
- *script = '/';
+ *script = '/';
#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
- if (interpr)
- execv(interpr, argp);
- else
+ if (interpr)
+ execv(interpr, argp);
+ else
#endif
- execv(realpath_buff, argp);
- }
+ execv(realpath_buff, argp);
+ }
error_execing_cgi:
- /* send to stdout (even if we are not from inetd) */
- config->accepted_socket = 1;
- sendHeaders(HTTP_NOT_FOUND);
- _exit(242);
- } /* end child */
+ /* send to stdout (even if we are not from inetd) */
+ config->accepted_socket = 1;
+ sendHeaders(HTTP_NOT_FOUND);
+ _exit(242);
+ } /* end child */
- } while (0);
+ /* parent process */
- if (pid > 0) {
- /* parent process */
- int status;
- size_t post_readed_size = 0, post_readed_idx = 0;
+ post_readed_size = 0;
+ post_readed_idx = 0;
+ inFd = fromCgi[0];
+ outFd = toCgi[1];
+ close(fromCgi[1]);
+ close(toCgi[0]);
+ signal(SIGPIPE, SIG_IGN);
- inFd = fromCgi[0];
- outFd = toCgi[1];
- close(fromCgi[1]);
- close(toCgi[0]);
- signal(SIGPIPE, SIG_IGN);
-
- while (1) {
- fd_set readSet;
- fd_set writeSet;
- char wbuf[128];
- int nfound;
- int count;
-
- FD_ZERO(&readSet);
- FD_ZERO(&writeSet);
- FD_SET(inFd, &readSet);
- if (bodyLen > 0 || post_readed_size > 0) {
- FD_SET(outFd, &writeSet);
- nfound = outFd > inFd ? outFd : inFd;
- if (post_readed_size == 0) {
- FD_SET(config->accepted_socket, &readSet);
- if (nfound < config->accepted_socket)
- nfound = config->accepted_socket;
- }
- /* Now wait on the set of sockets! */
- nfound = select(nfound + 1, &readSet, &writeSet, 0, NULL);
- } else {
- if (!bodyLen) {
- close(outFd);
- bodyLen = -1;
- }
- nfound = select(inFd + 1, &readSet, 0, 0, NULL);
+ while (1) {
+ fd_set readSet;
+ fd_set writeSet;
+ char wbuf[128];
+ int nfound;
+ int count;
+
+ FD_ZERO(&readSet);
+ FD_ZERO(&writeSet);
+ FD_SET(inFd, &readSet);
+ if (bodyLen > 0 || post_readed_size > 0) {
+ FD_SET(outFd, &writeSet);
+ nfound = outFd > inFd ? outFd : inFd;
+ if (post_readed_size == 0) {
+ FD_SET(config->accepted_socket, &readSet);
+ if (nfound < config->accepted_socket)
+ nfound = config->accepted_socket;
}
+ /* Now wait on the set of sockets! */
+ nfound = select(nfound + 1, &readSet, &writeSet, 0, NULL);
+ } else {
+ if (!bodyLen) {
+ close(outFd);
+ bodyLen = -1;
+ }
+ nfound = select(inFd + 1, &readSet, 0, 0, NULL);
+ }
- if (nfound <= 0) {
- if (waitpid(pid, &status, WNOHANG) > 0) {
- close(inFd);
- if (DEBUG && WIFEXITED(status))
- bb_error_msg("piped has exited with status=%d", WEXITSTATUS(status));
- if (DEBUG && WIFSIGNALED(status))
- bb_error_msg("piped has exited with signal=%d", WTERMSIG(status));
- break;
- }
- } else if (post_readed_size > 0 && FD_ISSET(outFd, &writeSet)) {
- count = full_write(outFd, wbuf + post_readed_idx, post_readed_size);
- if (count > 0) {
- post_readed_size -= count;
- post_readed_idx += count;
- if (post_readed_size == 0)
- post_readed_idx = 0;
- } else {
- post_readed_size = post_readed_idx = bodyLen = 0; /* broken pipe to CGI */
- }
- } else if (bodyLen > 0 && post_readed_size == 0 && FD_ISSET(config->accepted_socket, &readSet)) {
- count = bodyLen > (int)sizeof(wbuf) ? (int)sizeof(wbuf) : bodyLen;
- count = safe_read(config->accepted_socket, wbuf, count);
- if (count > 0) {
- post_readed_size += count;
- bodyLen -= count;
- } else {
- bodyLen = 0; /* closed */
- }
+ if (nfound <= 0) {
+ if (waitpid(pid, &status, WNOHANG) > 0) {
+ close(inFd);
+ if (DEBUG && WIFEXITED(status))
+ bb_error_msg("piped has exited with status=%d", WEXITSTATUS(status));
+ if (DEBUG && WIFSIGNALED(status))
+ bb_error_msg("piped has exited with signal=%d", WTERMSIG(status));
+ break;
+ }
+ } else if (post_readed_size > 0 && FD_ISSET(outFd, &writeSet)) {
+ count = full_write(outFd, wbuf + post_readed_idx, post_readed_size);
+ if (count > 0) {
+ post_readed_size -= count;
+ post_readed_idx += count;
+ if (post_readed_size == 0)
+ post_readed_idx = 0;
+ } else {
+ post_readed_size = post_readed_idx = bodyLen = 0; /* broken pipe to CGI */
}
- if (FD_ISSET(inFd, &readSet)) {
- int s = config->accepted_socket;
- char *rbuf = config->buf;
+ } else if (bodyLen > 0 && post_readed_size == 0 && FD_ISSET(config->accepted_socket, &readSet)) {
+ count = bodyLen > (int)sizeof(wbuf) ? (int)sizeof(wbuf) : bodyLen;
+ count = safe_read(config->accepted_socket, wbuf, count);
+ if (count > 0) {
+ post_readed_size += count;
+ bodyLen -= count;
+ } else {
+ bodyLen = 0; /* closed */
+ }
+ }
+ if (FD_ISSET(inFd, &readSet)) {
+ int s = config->accepted_socket;
+ char *rbuf = config->buf;
#ifndef PIPE_BUF
# define PIPESIZE 4096 /* amount of buffering in a pipe */
# error "PIPESIZE >= MAX_MEMORY_BUFF"
#endif
- // There is something to read
- count = safe_read(inFd, rbuf, PIPESIZE);
- if (count == 0)
- break; /* closed */
- if (count > 0) {
- if (firstLine) {
- rbuf[count] = 0;
- /* check to see if the user script added headers */
- if (strncmp(rbuf, "HTTP/1.0 200 OK\r\n", 4) != 0) {
- full_write(s, "HTTP/1.0 200 OK\r\n", 17);
- }
- if (strstr(rbuf, "ontent-") == 0) {
- full_write(s, "Content-type: text/plain\r\n\r\n", 28);
- }
- firstLine = 0;
+ // There is something to read
+ count = safe_read(inFd, rbuf, PIPESIZE);
+ if (count == 0)
+ break; /* closed */
+ if (count > 0) {
+ if (firstLine) {
+ rbuf[count] = 0;
+ /* check to see if the user script added headers */
+ if (strncmp(rbuf, "HTTP/1.0 200 OK\r\n", 4) != 0) {
+ full_write(s, "HTTP/1.0 200 OK\r\n", 17);
}
- if (full_write(s, rbuf, count) != count)
- break;
-
- if (DEBUG)
- fprintf(stderr, "cgi read %d bytes\n", count);
+ if (strstr(rbuf, "ontent-") == 0) {
+ full_write(s, "Content-type: text/plain\r\n\r\n", 28);
+ }
+ firstLine = 0;
}
+ if (full_write(s, rbuf, count) != count)
+ break;
+
+ if (DEBUG)
+ fprintf(stderr, "cgi read %d bytes\n", count);
}
}
}
projects / oweals / busybox.git / commitdiff