mirror of
https://github.com/emikulic/darkhttpd.git
synced 2023-08-10 21:13:08 +03:00
. Added ogg mimetype
. Added xvasprintf() . Added xasprintf() . Some signed/unsigned clarifications . Simplified asprintf() error handling using xasprintf() . Check for failure of signal()
This commit is contained in:
Emil Mikulic
parent
5a6c7cf08e
commit
0d755c3618
@ -15,6 +15,7 @@
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* x Log to file.
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* . Partial content.
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* x If-Modified-Since.
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* . Test If-Mod-Since with IE, Phoenix, lynx, links
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* . Keep-alive connections.
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* . Chroot, set{uid|gid}.
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* . Port to Win32.
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@ -132,6 +133,7 @@ static const char *default_extension_map[] = {
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"image/jpeg jpeg jpe jpg",
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"image/gif gif",
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"audio/mpeg mp2 mp3 mpga",
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"application/ogg ogg",
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"text/css css",
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"text/plain txt asc",
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"text/xml xml",
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@ -180,10 +182,39 @@ static char *xstrdup(const char *src)
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/* ---------------------------------------------------------------------------
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* asprintf() that errx()s if it fails.
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*/
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static unsigned int xvasprintf(char **ret, const char *format, va_list ap)
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{
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int len = vasprintf(ret, format, ap);
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if (ret == NULL || len == -1) errx(1, "out of memory in vasprintf()");
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return (unsigned int)len;
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}
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/* ---------------------------------------------------------------------------
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* asprintf() that errx()s if it fails.
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*/
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static unsigned int xasprintf(char **ret, const char *format, ...)
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{
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va_list va;
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int len;
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va_start(va, format);
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len = xvasprintf(ret, format, va);
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va_end(va);
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return len;
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}
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/* ---------------------------------------------------------------------------
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* Split string out of src with range [left:right-1]
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*/
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static char *split_string(const char *src, const int left, const int right)
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static char *split_string(const char *src,
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const unsigned int left, const unsigned int right)
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{
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char *dest = (char*) xmalloc(right - left + 1);
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memcpy(dest, src+left, right-left);
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@ -200,7 +231,7 @@ static char *split_string(const char *src, const int left, const int right)
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static char *make_safe_uri(const char *uri)
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{
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char **elements, **reassembly, *out;
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int slashes, i, elem, reasm, urilen;
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unsigned int slashes, elem, reasm, urilen, i, j;
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if (uri[0] != '/') return NULL;
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urilen = strlen(uri);
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@ -217,8 +248,6 @@ static char *make_safe_uri(const char *uri)
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elem = i = 0;
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while (i < urilen) /* i is the left bound */
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{
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int j;
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/* look for a non-slash */
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for (; uri[i] == '/'; i++);
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@ -244,7 +273,6 @@ static char *make_safe_uri(const char *uri)
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if (reasm == 0)
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{
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/* user walked out of wwwroot! unsafe uri! */
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int j;
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for (j=0; j<elem; j++)
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if (elements[j] != NULL) free(elements[j]);
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free(elements);
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@ -284,7 +312,7 @@ static char *make_safe_uri(const char *uri)
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*/
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static void parse_mimetype_line(const char *line)
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{
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int pad, bound1, lbound, rbound;
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unsigned int pad, bound1, lbound, rbound;
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/* parse mimetype */
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for (pad=0; line[pad] == ' ' || line[pad] == '\t'; pad++);
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@ -398,7 +426,7 @@ static void parse_extension_map_file(const char *filename)
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/* ---------------------------------------------------------------------------
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* Uses the mime_map to determines a Content-Type: for a requested URI.
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* Uses the mime_map to determine a Content-Type: for a requested URI.
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*/
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static const char *uri_content_type(const char *uri)
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{
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@ -514,8 +542,7 @@ static char *expand_tilde(const char *path)
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if (home == NULL) errx(1, "can't expand `~'");
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asprintf(&tmp, "%s%s", home, path+1);
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if (tmp == NULL) errx(1, "out of memory in asprintf()");
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xasprintf(&tmp, "%s%s", home, path+1);
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return tmp;
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}
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@ -682,9 +709,9 @@ static void free_connection(struct connection *conn)
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/* ---------------------------------------------------------------------------
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* Uppercasify all characters in a string of given length.
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*/
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static void strntoupper(char *str, const int length)
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static void strntoupper(char *str, const size_t length)
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{
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int i;
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size_t i;
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for (i=0; i<length; i++)
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str[i] = toupper(str[i]);
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}
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@ -724,7 +751,7 @@ static char *rfc1123_date(const time_t when)
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*/
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static char *urldecode(const char *url)
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{
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int len = strlen(url);
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size_t len = strlen(url);
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char *out = (char*)xmalloc(len+1);
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int i, pos;
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@ -769,31 +796,29 @@ static void default_reply(struct connection *conn,
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va_list va;
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va_start(va, format);
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vasprintf(&reason, format, va);
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xvasprintf(&reason, format, va);
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va_end(va);
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if (reason == NULL) errx(1, "out of memory in vasprintf()");
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conn->reply_length = asprintf(&(conn->reply),
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"<html><head><title>%d %s</title></head><body>\n"
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"<h1>%s</h1>\n" /* errname */
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"%s\n" /* reason */
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"<hr>\n"
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"Generated by %s on %s\n"
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"</body></html>\n",
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errcode, errname, errname, reason, pkgname, rfc1123_date(time(NULL)));
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conn->reply_length = xasprintf(&(conn->reply),
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"<html><head><title>%d %s</title></head><body>\n"
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"<h1>%s</h1>\n" /* errname */
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"%s\n" /* reason */
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"<hr>\n"
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"Generated by %s on %s\n"
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"</body></html>\n",
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errcode, errname, errname, reason, pkgname, rfc1123_date(time(NULL)));
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free(reason);
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if (conn->reply == NULL) errx(1, "out of memory in asprintf()");
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conn->header_length = asprintf(&(conn->header),
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"HTTP/1.1 %d %s\r\n"
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"Date: %s\r\n"
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"Server: %s\r\n"
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"Connection: close\r\n"
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"Content-Length: %d\r\n"
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"Content-Type: text/html\r\n"
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"\r\n",
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errcode, errname, rfc1123_date(time(NULL)), pkgname, conn->reply_length);
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if (conn->header == NULL) errx(1, "out of memory in asprintf()");
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conn->header_length = xasprintf(&(conn->header),
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"HTTP/1.1 %d %s\r\n"
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"Date: %s\r\n"
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"Server: %s\r\n"
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"Connection: close\r\n"
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"Content-Length: %d\r\n"
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"Content-Type: text/html\r\n"
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"\r\n",
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errcode, errname, rfc1123_date(time(NULL)), pkgname,
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conn->reply_length);
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conn->reply_type = REPLY_GENERATED;
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conn->http_code = errcode;
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@ -873,33 +898,31 @@ static void process_get(struct connection *conn)
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/* make sure it's safe */
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safe_url = make_safe_uri(decoded_url);
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free(decoded_url); decoded_url = NULL;
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if (safe_url == NULL)
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{
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default_reply(conn, 400, "Bad Request",
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"You requested an invalid URI: %s", conn->uri);
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return;
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}
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free(decoded_url);
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decoded_url = NULL;
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/* does it end in a slash? serve up url/index_name */
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if (safe_url[strlen(safe_url)-1] == '/')
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{
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asprintf(&target, "%s%s%s", wwwroot, safe_url, index_name);
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xasprintf(&target, "%s%s%s", wwwroot, safe_url, index_name);
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mimetype = uri_content_type(index_name);
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}
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else
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else /* points to a file */
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{
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asprintf(&target, "%s%s", wwwroot, safe_url);
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xasprintf(&target, "%s%s", wwwroot, safe_url);
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mimetype = uri_content_type(safe_url);
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}
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free(safe_url);
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safe_url = NULL;
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free(safe_url); safe_url = NULL;
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debugf("uri=%s, target=%s, content-type=%s\n",
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conn->uri, target, mimetype);
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conn->reply_file = fopen(target, "rb");
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free(target);
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target = NULL;
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free(target); target = NULL;
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if (conn->reply_file == NULL)
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{
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@ -939,7 +962,7 @@ static void process_get(struct connection *conn)
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return;
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}
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conn->header_length = asprintf(&(conn->header),
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conn->header_length = xasprintf(&(conn->header),
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"HTTP/1.1 200 OK\r\n"
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"Date: %s\r\n"
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"Server: %s\r\n"
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@ -952,7 +975,6 @@ static void process_get(struct connection *conn)
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rfc1123_date(time(NULL)), pkgname, conn->reply_length,
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mimetype, conn->lastmod
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);
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if (conn->header == NULL) errx(1, "out of memory in asprintf()");
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conn->http_code = 200;
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}
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@ -966,7 +988,9 @@ static void process_request(struct connection *conn)
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parse_request(conn);
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if (strcmp(conn->method, "GET") == 0)
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{
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process_get(conn);
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}
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else if (strcmp(conn->method, "HEAD") == 0)
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{
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process_get(conn);
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@ -978,19 +1002,22 @@ static void process_request(struct connection *conn)
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strcmp(conn->method, "DELETE") == 0 ||
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strcmp(conn->method, "TRACE") == 0 ||
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strcmp(conn->method, "CONNECT") == 0)
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{
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default_reply(conn, 501, "Not Implemented",
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"The method you specified (%s) is not implemented.",
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conn->method);
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}
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else
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{
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default_reply(conn, 400, "Bad Request",
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"%s is not a valid HTTP/1.1 method.", conn->method);
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}
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/* advance state */
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conn->state = SEND_HEADER;
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/* request not needed anymore */
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free(conn->request);
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conn->request = NULL;
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free(conn->request); conn->request = NULL;
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}
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@ -1017,7 +1044,7 @@ static void poll_recv_request(struct connection *conn)
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/* append to conn->request */
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conn->request = xrealloc(conn->request, conn->request_length+recvd+1);
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memcpy(conn->request+conn->request_length, buf, recvd);
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memcpy(conn->request+conn->request_length, buf, (size_t)recvd);
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conn->request_length += recvd;
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conn->request[conn->request_length] = 0;
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@ -1093,10 +1120,10 @@ static void poll_send_reply(struct connection *conn)
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/* from file! */
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#define BUFSIZE 65000
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char buf[BUFSIZE];
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int amount = min(BUFSIZE, conn->reply_length - conn->reply_sent);
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size_t amount = min(BUFSIZE, conn->reply_length - conn->reply_sent);
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#undef BUFSIZE
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if (fseek(conn->reply_file, conn->reply_sent, SEEK_SET) == -1)
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if (fseek(conn->reply_file, (long)conn->reply_sent, SEEK_SET) == -1)
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err(1, "fseek(%d)", conn->reply_sent);
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if (fread(buf, amount, 1, conn->reply_file) != 1)
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@ -1228,18 +1255,15 @@ static void httpd_poll(void)
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switch (conn->state)
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{
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case RECV_REQUEST:
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if (FD_ISSET(conn->socket, &recv_set))
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poll_recv_request(conn);
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if (FD_ISSET(conn->socket, &recv_set)) poll_recv_request(conn);
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break;
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case SEND_HEADER:
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if (FD_ISSET(conn->socket, &send_set))
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poll_send_header(conn);
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if (FD_ISSET(conn->socket, &send_set)) poll_send_header(conn);
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break;
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case SEND_REPLY:
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if (FD_ISSET(conn->socket, &send_set))
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poll_send_reply(conn);
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if (FD_ISSET(conn->socket, &send_set)) poll_send_reply(conn);
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break;
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default: errx(1, "invalid state");
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@ -1258,6 +1282,9 @@ static void ignore_signal(int signum)
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/* ---------------------------------------------------------------------------
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* Execution starts here.
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*/
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int main(int argc, char *argv[])
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{
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printf("%s, %s.\n", pkgname, copyright);
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@ -1272,7 +1299,8 @@ int main(int argc, char *argv[])
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if (logfile == NULL) err(1, "fopen(\"%s\")", logfile_name);
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}
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signal(SIGPIPE, ignore_signal);
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if (signal(SIGPIPE, ignore_signal) == SIG_ERR)
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err(1, "signal(SIG_PIPE)");
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for (;;) httpd_poll();
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