httpd shrink and logging update, part 4 of 7
text data bss dec hex filename 9836 0 0 9836 266c busybox.t1/networking/httpd.o.orig 9724 0 0 9724 25fc busybox.t2/networking/httpd.o 9657 0 0 9657 25b9 busybox.t3/networking/httpd.o 9342 0 0 9342 247e busybox.t4/networking/httpd.o 9342 0 0 9342 247e busybox.t5/networking/httpd.o 9262 0 0 9262 242e busybox.t6/networking/httpd.o 9283 0 0 9283 2443 busybox.t7/networking/httpd.o 9334 0 0 9334 2476 busybox.t8/networking/httpd.o
This commit is contained in:
Denis Vlasenko
parent
e45af73dc2
commit
91adf7d587
@ -1506,7 +1506,7 @@ static int checkPerm(const char *path, const char *request)
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}
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/* unauthorized */
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}
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} /* for */
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} /* for */
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return prev == NULL;
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}
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@ -1542,7 +1542,6 @@ static void handle_incoming_and_exit(void)
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char *content_type = 0;
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#endif
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struct sigaction sa;
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#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
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int credentials = -1; /* if not required this is Ok */
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#endif
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@ -1552,229 +1551,226 @@ static void handle_incoming_and_exit(void)
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sa.sa_flags = 0; /* no SA_RESTART */
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sigaction(SIGALRM, &sa, NULL);
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/* It's not a real loop (it ends with while(0)).
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* Break from this "loop" jumps to exit(0) */
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do {
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alarm(TIMEOUT);
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if (!get_line())
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_exit(0); /* EOF or error or empty line */
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alarm(TIMEOUT);
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if (!get_line())
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_exit(0); /* EOF or error or empty line */
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purl = strpbrk(iobuf, " \t");
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if (purl == NULL) {
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send_headers_and_exit(HTTP_BAD_REQUEST);
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}
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*purl = '\0';
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purl = strpbrk(iobuf, " \t");
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if (purl == NULL) {
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send_headers_and_exit(HTTP_BAD_REQUEST);
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}
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*purl = '\0';
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#if ENABLE_FEATURE_HTTPD_CGI
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if (strcasecmp(iobuf, prequest) != 0) {
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prequest = "POST";
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if (strcasecmp(iobuf, prequest) != 0) {
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prequest = "POST";
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if (strcasecmp(iobuf, prequest) != 0) {
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send_headers_and_exit(HTTP_NOT_IMPLEMENTED);
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}
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}
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#else
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if (strcasecmp(iobuf, request_GET) != 0) {
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send_headers_and_exit(HTTP_NOT_IMPLEMENTED);
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}
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}
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#else
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if (strcasecmp(iobuf, request_GET) != 0) {
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send_headers_and_exit(HTTP_NOT_IMPLEMENTED);
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}
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#endif
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*purl = ' ';
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count = sscanf(purl, " %[^ ] HTTP/%d.%*d", iobuf, &blank);
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*purl = ' ';
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count = sscanf(purl, " %[^ ] HTTP/%d.%*d", iobuf, &blank);
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if (count < 1 || iobuf[0] != '/') {
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/* Garbled request/URL */
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send_headers_and_exit(HTTP_BAD_REQUEST);
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}
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url = alloca(strlen(iobuf) + sizeof("/index.html"));
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if (url == NULL) {
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send_headers_and_exit(HTTP_INTERNAL_SERVER_ERROR);
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}
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strcpy(url, iobuf);
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/* extract url args if present */
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test = strchr(url, '?');
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g_query = NULL;
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if (test) {
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*test++ = '\0';
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g_query = test;
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}
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if (count < 1 || iobuf[0] != '/') {
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/* Garbled request/URL */
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send_headers_and_exit(HTTP_BAD_REQUEST);
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}
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url = alloca(strlen(iobuf) + sizeof("/index.html"));
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if (url == NULL) {
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send_headers_and_exit(HTTP_INTERNAL_SERVER_ERROR);
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}
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strcpy(url, iobuf);
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/* extract url args if present */
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test = strchr(url, '?');
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g_query = NULL;
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if (test) {
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*test++ = '\0';
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g_query = test;
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}
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test = decodeString(url, 0);
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if (test == NULL)
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send_headers_and_exit(HTTP_BAD_REQUEST);
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if (test == url + 1) {
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/* '/' or NUL is encoded */
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send_headers_and_exit(HTTP_NOT_FOUND);
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}
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test = decodeString(url, 0);
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if (test == NULL)
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send_headers_and_exit(HTTP_BAD_REQUEST);
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if (test == url + 1) {
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/* '/' or NUL is encoded */
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send_headers_and_exit(HTTP_NOT_FOUND);
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}
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/* algorithm stolen from libbb bb_simplify_path(),
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* but don't strdup and reducing trailing slash and protect out root */
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purl = test = url;
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do {
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if (*purl == '/') {
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/* skip duplicate (or initial) slash */
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if (*test == '/') {
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/* algorithm stolen from libbb bb_simplify_path(),
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* but don't strdup and reducing trailing slash and protect out root */
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purl = test = url;
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do {
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if (*purl == '/') {
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/* skip duplicate (or initial) slash */
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if (*test == '/') {
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continue;
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}
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if (*test == '.') {
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/* skip extra '.' */
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if (test[1] == '/' || !test[1]) {
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continue;
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}
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if (*test == '.') {
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/* skip extra '.' */
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if (test[1] == '/' || !test[1]) {
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/* '..': be careful */
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if (test[1] == '.' && (test[2] == '/' || !test[2])) {
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++test;
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if (purl == url) {
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/* protect root */
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send_headers_and_exit(HTTP_BAD_REQUEST);
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}
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while (*--purl != '/') /* omit previous dir */;
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continue;
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}
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/* '..': be careful */
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if (test[1] == '.' && (test[2] == '/' || !test[2])) {
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++test;
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if (purl == url) {
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/* protect root */
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send_headers_and_exit(HTTP_BAD_REQUEST);
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}
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while (*--purl != '/') /* omit previous dir */;
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continue;
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}
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}
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}
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*++purl = *test;
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} while (*++test);
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*++purl = '\0'; /* so keep last character */
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test = purl; /* end ptr */
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/* If URL is directory, adding '/' */
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if (test[-1] != '/') {
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if (is_directory(url + 1, 1, &sb)) {
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found_moved_temporarily = url;
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}
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}
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if (verbose > 1)
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bb_error_msg("url:%s", url);
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*++purl = *test;
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} while (*++test);
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*++purl = '\0'; /* so keep last character */
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test = purl; /* end ptr */
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test = url;
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ip_allowed = checkPermIP();
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while (ip_allowed && (test = strchr(test + 1, '/')) != NULL) {
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/* have path1/path2 */
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*test = '\0';
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if (is_directory(url + 1, 1, &sb)) {
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/* may be having subdir config */
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parse_conf(url + 1, SUBDIR_PARSE);
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ip_allowed = checkPermIP();
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}
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*test = '/';
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/* If URL is directory, adding '/' */
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if (test[-1] != '/') {
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if (is_directory(url + 1, 1, &sb)) {
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found_moved_temporarily = url;
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}
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if (blank >= 0) {
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/* read until blank line for HTTP version specified, else parse immediate */
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while (1) {
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alarm(TIMEOUT);
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if (!get_line())
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break; /* EOF or error or empty line */
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}
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if (DEBUG)
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bb_error_msg("header: '%s'", iobuf);
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if (verbose > 1)
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bb_error_msg("url:%s", url);
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test = url;
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ip_allowed = checkPermIP();
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while (ip_allowed && (test = strchr(test + 1, '/')) != NULL) {
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/* have path1/path2 */
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*test = '\0';
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if (is_directory(url + 1, 1, &sb)) {
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/* may be having subdir config */
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parse_conf(url + 1, SUBDIR_PARSE);
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ip_allowed = checkPermIP();
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}
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*test = '/';
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}
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if (blank >= 0) {
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/* read until blank line for HTTP version specified, else parse immediate */
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while (1) {
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alarm(TIMEOUT);
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if (!get_line())
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break; /* EOF or error or empty line */
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if (DEBUG)
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bb_error_msg("header: '%s'", iobuf);
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#if ENABLE_FEATURE_HTTPD_CGI
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/* try and do our best to parse more lines */
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if ((STRNCASECMP(iobuf, "Content-length:") == 0)) {
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/* extra read only for POST */
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if (prequest != request_GET) {
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test = iobuf + sizeof("Content-length:") - 1;
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if (!test[0])
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_exit(0);
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errno = 0;
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/* not using strtoul: it ignores leading minus! */
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length = strtol(test, &test, 10);
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/* length is "ulong", but we need to pass it to int later */
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/* so we check for negative or too large values in one go: */
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/* (long -> ulong conv caused negatives to be seen as > INT_MAX) */
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if (test[0] || errno || length > INT_MAX)
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_exit(0);
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}
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} else if (STRNCASECMP(iobuf, "Cookie:") == 0) {
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cookie = strdup(skip_whitespace(iobuf + sizeof("Cookie:")-1));
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} else if (STRNCASECMP(iobuf, "Content-Type:") == 0) {
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content_type = strdup(skip_whitespace(iobuf + sizeof("Content-Type:")-1));
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} else if (STRNCASECMP(iobuf, "Referer:") == 0) {
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referer = strdup(skip_whitespace(iobuf + sizeof("Referer:")-1));
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} else if (STRNCASECMP(iobuf, "User-Agent:") == 0) {
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user_agent = strdup(skip_whitespace(iobuf + sizeof("User-Agent:")-1));
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/* try and do our best to parse more lines */
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if ((STRNCASECMP(iobuf, "Content-length:") == 0)) {
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/* extra read only for POST */
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if (prequest != request_GET) {
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test = iobuf + sizeof("Content-length:") - 1;
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if (!test[0])
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_exit(0);
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errno = 0;
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/* not using strtoul: it ignores leading minus! */
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length = strtol(test, &test, 10);
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/* length is "ulong", but we need to pass it to int later */
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/* so we check for negative or too large values in one go: */
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/* (long -> ulong conv caused negatives to be seen as > INT_MAX) */
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if (test[0] || errno || length > INT_MAX)
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_exit(0);
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}
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} else if (STRNCASECMP(iobuf, "Cookie:") == 0) {
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cookie = strdup(skip_whitespace(iobuf + sizeof("Cookie:")-1));
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} else if (STRNCASECMP(iobuf, "Content-Type:") == 0) {
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content_type = strdup(skip_whitespace(iobuf + sizeof("Content-Type:")-1));
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} else if (STRNCASECMP(iobuf, "Referer:") == 0) {
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referer = strdup(skip_whitespace(iobuf + sizeof("Referer:")-1));
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} else if (STRNCASECMP(iobuf, "User-Agent:") == 0) {
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user_agent = strdup(skip_whitespace(iobuf + sizeof("User-Agent:")-1));
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}
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#endif
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#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
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if (STRNCASECMP(iobuf, "Authorization:") == 0) {
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/* We only allow Basic credentials.
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* It shows up as "Authorization: Basic <userid:password>" where
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* the userid:password is base64 encoded.
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*/
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test = skip_whitespace(iobuf + sizeof("Authorization:")-1);
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if (STRNCASECMP(test, "Basic") != 0)
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continue;
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test += sizeof("Basic")-1;
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/* decodeBase64() skips whitespace itself */
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decodeBase64(test);
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credentials = checkPerm(url, test);
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}
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if (STRNCASECMP(iobuf, "Authorization:") == 0) {
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/* We only allow Basic credentials.
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* It shows up as "Authorization: Basic <userid:password>" where
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* the userid:password is base64 encoded.
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*/
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test = skip_whitespace(iobuf + sizeof("Authorization:")-1);
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if (STRNCASECMP(test, "Basic") != 0)
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continue;
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test += sizeof("Basic")-1;
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/* decodeBase64() skips whitespace itself */
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decodeBase64(test);
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credentials = checkPerm(url, test);
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}
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#endif /* FEATURE_HTTPD_BASIC_AUTH */
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} /* while extra header reading */
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}
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alarm(0);
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} /* while extra header reading */
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}
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if (strcmp(bb_basename(url), httpd_conf) == 0 || ip_allowed == 0) {
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/* protect listing [/path]/httpd_conf or IP deny */
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alarm(0);
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if (strcmp(bb_basename(url), httpd_conf) == 0 || ip_allowed == 0) {
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/* protect listing [/path]/httpd_conf or IP deny */
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send_headers_and_exit(HTTP_FORBIDDEN);
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}
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#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
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if (credentials <= 0 && checkPerm(url, ":") == 0) {
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send_headers_and_exit(HTTP_UNAUTHORIZED);
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}
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#endif
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if (found_moved_temporarily) {
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send_headers_and_exit(HTTP_MOVED_TEMPORARILY);
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}
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test = url + 1; /* skip first '/' */
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#if ENABLE_FEATURE_HTTPD_CGI
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if (strncmp(test, "cgi-bin", 7) == 0) {
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if (test[7] == '/' && test[8] == '\0') {
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/* protect listing cgi-bin/ */
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send_headers_and_exit(HTTP_FORBIDDEN);
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}
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#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
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if (credentials <= 0 && checkPerm(url, ":") == 0) {
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send_headers_and_exit(HTTP_UNAUTHORIZED);
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}
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#endif
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if (found_moved_temporarily) {
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send_headers_and_exit(HTTP_MOVED_TEMPORARILY);
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}
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test = url + 1; /* skip first '/' */
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#if ENABLE_FEATURE_HTTPD_CGI
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if (strncmp(test, "cgi-bin", 7) == 0) {
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if (test[7] == '/' && test[8] == '\0') {
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/* protect listing cgi-bin/ */
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send_headers_and_exit(HTTP_FORBIDDEN);
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}
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send_cgi_and_exit(url, prequest, length, cookie, content_type);
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}
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send_cgi_and_exit(url, prequest, length, cookie, content_type);
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}
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#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
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{
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char *suffix = strrchr(test, '.');
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if (suffix) {
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Htaccess *cur;
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for (cur = script_i; cur; cur = cur->next) {
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if (strcmp(cur->before_colon + 1, suffix) == 0) {
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send_cgi_and_exit(url, prequest, length, cookie, content_type);
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}
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{
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char *suffix = strrchr(test, '.');
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if (suffix) {
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Htaccess *cur;
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for (cur = script_i; cur; cur = cur->next) {
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if (strcmp(cur->before_colon + 1, suffix) == 0) {
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send_cgi_and_exit(url, prequest, length, cookie, content_type);
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}
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}
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}
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}
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#endif
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if (prequest != request_GET) {
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send_headers_and_exit(HTTP_NOT_IMPLEMENTED);
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}
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if (prequest != request_GET) {
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send_headers_and_exit(HTTP_NOT_IMPLEMENTED);
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}
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#endif /* FEATURE_HTTPD_CGI */
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if (purl[-1] == '/')
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strcpy(purl, "index.html");
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if (stat(test, &sb) == 0) {
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/* It's a dir URL and there is index.html */
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ContentLength = sb.st_size;
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last_mod = sb.st_mtime;
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}
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if (purl[-1] == '/')
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strcpy(purl, "index.html");
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if (stat(test, &sb) == 0) {
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/* It's a dir URL and there is index.html */
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ContentLength = sb.st_size;
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last_mod = sb.st_mtime;
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}
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#if ENABLE_FEATURE_HTTPD_CGI
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else if (purl[-1] == '/') {
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/* It's a dir URL and there is no index.html
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* Try cgi-bin/index.cgi */
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if (access("/cgi-bin/index.cgi"+1, X_OK) == 0) {
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purl[0] = '\0';
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g_query = url;
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send_cgi_and_exit("/cgi-bin/index.cgi", prequest, length, cookie, content_type);
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}
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else if (purl[-1] == '/') {
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/* It's a dir URL and there is no index.html
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* Try cgi-bin/index.cgi */
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if (access("/cgi-bin/index.cgi"+1, X_OK) == 0) {
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purl[0] = '\0';
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g_query = url;
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send_cgi_and_exit("/cgi-bin/index.cgi", prequest, length, cookie, content_type);
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}
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}
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#endif /* FEATURE_HTTPD_CGI */
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send_file_and_exit(test);
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} while (0);
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_exit(0);
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send_file_and_exit(test);
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#if 0 /* Is this needed? Why? */
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if (DEBUG)
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@ -1817,7 +1813,6 @@ static void handle_incoming_and_exit(void)
|
||||
static void mini_httpd(int server) ATTRIBUTE_NORETURN;
|
||||
static void mini_httpd(int server)
|
||||
{
|
||||
/* copy the ports we are watching to the readfd set */
|
||||
while (1) {
|
||||
int n;
|
||||
len_and_sockaddr fromAddr;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user