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Diffstat (limited to 'networking/httpd.c')
-rw-r--r--networking/httpd.c242
1 files changed, 116 insertions, 126 deletions
diff --git a/networking/httpd.c b/networking/httpd.c
index 875b9d6..9a9489e 100644
--- a/networking/httpd.c
+++ b/networking/httpd.c
@@ -132,17 +132,22 @@ typedef struct Htaccess_IP {
struct globals {
int server_socket;
int accepted_socket;
+ int verbose;
volatile smallint alarm_signaled;
smallint flg_deny_all;
+
+ unsigned rmt_ip;
+ unsigned tcp_port; /* for set env REMOTE_PORT */
+ const char *bind_addr_or_port;
+
const char *g_query;
const char *configFile;
const char *home_httpd;
- unsigned rmt_ip;
const char *found_mime_type;
const char *found_moved_temporarily;
- off_t ContentLength; /* -1 - unknown */
time_t last_mod;
+ off_t ContentLength; /* -1 - unknown */
Htaccess_IP *ip_a_d; /* config allow/deny lines */
USE_FEATURE_HTTPD_BASIC_AUTH(const char *g_realm;)
@@ -150,11 +155,7 @@ struct globals {
USE_FEATURE_HTTPD_CGI(char *referer;)
USE_FEATURE_HTTPD_CGI(char *user_agent;)
-#if ENABLE_FEATURE_HTTPD_CGI || DEBUG
char *rmt_ip_str; /* for set env REMOTE_ADDR */
-#endif
- const char *bind_addr_or_port;
- unsigned tcp_port; /* for set env REMOTE_PORT */
#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
Htaccess *g_auth; /* config user:password lines */
@@ -168,38 +169,31 @@ struct globals {
char iobuf[MAX_MEMORY_BUF];
};
#define G (*ptr_to_globals)
-#define server_socket (G.server_socket )
-#define accepted_socket (G.accepted_socket)
-#define alarm_signaled (G.alarm_signaled )
-#define flg_deny_all (G.flg_deny_all )
-#define g_query (G.g_query )
-#define configFile (G.configFile )
-#define home_httpd (G.home_httpd )
-#define rmt_ip (G.rmt_ip )
-#define found_mime_type (G.found_mime_type)
-#define found_moved_temporarily (G.found_moved_temporarily)
-#define ContentLength (G.ContentLength )
-#define last_mod (G.last_mod )
-#define ip_a_d (G.ip_a_d )
-#define g_realm (G.g_realm )
-#define remoteuser (G.remoteuser )
-#define referer (G.referer )
-#define user_agent (G.user_agent )
-#if ENABLE_FEATURE_HTTPD_CGI || DEBUG
-#define rmt_ip_str (G.rmt_ip_str )
-#endif
+#define server_socket (G.server_socket )
+#define accepted_socket (G.accepted_socket )
+#define verbose (G.verbose )
+#define alarm_signaled (G.alarm_signaled )
+#define flg_deny_all (G.flg_deny_all )
+#define rmt_ip (G.rmt_ip )
+#define tcp_port (G.tcp_port )
#define bind_addr_or_port (G.bind_addr_or_port)
-#define tcp_port (G.tcp_port )
-#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
-#define g_auth (G.g_auth )
-#endif
-#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
-#define mime_a (G.mime_a )
-#endif
-#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
-#define script_i (G.script_i )
-#endif
-#define iobuf (G.iobuf )
+#define g_query (G.g_query )
+#define configFile (G.configFile )
+#define home_httpd (G.home_httpd )
+#define found_mime_type (G.found_mime_type )
+#define found_moved_temporarily (G.found_moved_temporarily)
+#define ContentLength (G.ContentLength )
+#define last_mod (G.last_mod )
+#define ip_a_d (G.ip_a_d )
+#define g_realm (G.g_realm )
+#define remoteuser (G.remoteuser )
+#define referer (G.referer )
+#define user_agent (G.user_agent )
+#define rmt_ip_str (G.rmt_ip_str )
+#define g_auth (G.g_auth )
+#define mime_a (G.mime_a )
+#define script_i (G.script_i )
+#define iobuf (G.iobuf )
#define INIT_G() do { \
PTR_TO_GLOBALS = xzalloc(sizeof(G)); \
USE_FEATURE_HTTPD_BASIC_AUTH(g_realm = "Web Server Authentication";) \
@@ -210,7 +204,7 @@ struct globals {
static const char request_GET[] ALIGN1 = "GET"; /* size algorithmic optimize */
static const char *const suffixTable[] = {
-/* Warning: shorted equivalent suffix in one line must be first */
+/* Warning: shorter equivalent suffix in one line must be first */
".htm.html", "text/html",
".jpg.jpeg", "image/jpeg",
".gif", "image/gif",
@@ -780,24 +774,14 @@ static void setenv_long(const char *name, long value)
#endif
#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
-/****************************************************************************
- *
- > $Function: decodeBase64()
- *
- > $Description: Decode a base 64 data stream as per rfc1521.
- * Note that the rfc states that none base64 chars are to be ignored.
- * Since the decode always results in a shorter size than the input, it is
- * OK to pass the input arg as an output arg.
- *
- * $Parameter:
- * (char *) Data . . . . A pointer to a base64 encoded string.
- * Where to place the decoded data.
- *
- * $Return: void
- *
- * $Errors: None
- *
- ****************************************************************************/
+/*
+ * Decode a base 64 data stream as per rfc1521.
+ * Note that the rfc states that non base64 chars are to be ignored.
+ * Since the decode always results in a shorter size than the input, it is
+ * OK to pass the input arg as an output arg.
+ * Parameter: a pointer to a base64 encoded string.
+ * Decoded data is stored in-place.
+ */
static void decodeBase64(char *Data)
{
const unsigned char *in = (const unsigned char *)Data;
@@ -871,13 +855,12 @@ static int openServer(void)
*/
static int sendHeaders(HttpResponseNum responseNum)
{
- char *const buf = iobuf; // dont really need it?
const char *responseString = "";
- const char *infoString = 0;
+ const char *infoString = NULL;
const char *mime_type;
unsigned i;
time_t timer = time(0);
- char timeStr[80];
+ char tmp_str[80];
int len;
for (i = 0; i < ARRAY_SIZE(httpResponseNames); i++) {
@@ -891,54 +874,60 @@ static int sendHeaders(HttpResponseNum responseNum)
mime_type = responseNum == HTTP_OK ?
found_mime_type : "text/html";
+ if (verbose)
+ write(2, iobuf, sprintf(iobuf, "%s response:%u\n", rmt_ip_str, responseNum));
+
/* emit the current date */
- strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&timer));
- len = sprintf(buf,
+ strftime(tmp_str, sizeof(tmp_str), RFC1123FMT, gmtime(&timer));
+ len = sprintf(iobuf,
"HTTP/1.0 %d %s\r\nContent-type: %s\r\n"
"Date: %s\r\nConnection: close\r\n",
- responseNum, responseString, mime_type, timeStr);
+ responseNum, responseString, mime_type, tmp_str);
#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
if (responseNum == HTTP_UNAUTHORIZED) {
- len += sprintf(buf+len,
+ len += sprintf(iobuf + len,
"WWW-Authenticate: Basic realm=\"%s\"\r\n",
g_realm);
}
#endif
if (responseNum == HTTP_MOVED_TEMPORARILY) {
- len += sprintf(buf+len, "Location: %s/%s%s\r\n",
+ len += sprintf(iobuf + len, "Location: %s/%s%s\r\n",
found_moved_temporarily,
(g_query ? "?" : ""),
(g_query ? g_query : ""));
}
if (ContentLength != -1) { /* file */
- strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&last_mod));
- len += sprintf(buf+len, "Last-Modified: %s\r\n%s %"OFF_FMT"d\r\n",
- timeStr, "Content-length:", ContentLength);
+ strftime(tmp_str, sizeof(tmp_str), RFC1123FMT, gmtime(&last_mod));
+ len += sprintf(iobuf + len, "Last-Modified: %s\r\n%s %"OFF_FMT"d\r\n",
+ tmp_str, "Content-length:", ContentLength);
}
- strcat(buf, "\r\n");
+ strcat(iobuf, "\r\n");
len += 2;
if (infoString) {
- len += sprintf(buf+len,
+ len += sprintf(iobuf + len,
"<HTML><HEAD><TITLE>%d %s</TITLE></HEAD>\n"
"<BODY><H1>%d %s</H1>\n%s\n</BODY></HTML>\n",
responseNum, responseString,
responseNum, responseString, infoString);
}
if (DEBUG)
- fprintf(stderr, "headers: '%s'\n", buf);
+ fprintf(stderr, "headers: '%s'\n", iobuf);
i = accepted_socket;
- if (i == 0) i++; /* write to fd #1 in inetd mode */
- return full_write(i, buf, len);
+ if (i == 0)
+ i++; /* write to fd #1 in inetd mode */
+ return full_write(i, iobuf, len);
}
/*
* Read from the socket until '\n' or EOF. '\r' chars are removed.
- * Return number of characters read or -1 if nothing is read.
+ * '\n' is replaced with NUL.
+ * Return number of characters read or 0 if nothing is read
+ * ('\r' and '\n' are not counted).
* Data is returned in iobuf.
*/
-static int getLine(void)
+static int get_line(void)
{
int count = 0;
@@ -953,9 +942,7 @@ static int getLine(void)
if (count < (MAX_MEMORY_BUF - 1)) /* check overflow */
count++;
}
- if (count)
- return count;
- return -1;
+ return count;
}
#if ENABLE_FEATURE_HTTPD_CGI
@@ -1414,11 +1401,10 @@ static int checkPermIP(void)
/* This could stand some work */
for (cur = ip_a_d; cur; cur = cur->next) {
-#if ENABLE_FEATURE_HTTPD_CGI && DEBUG
- fprintf(stderr, "checkPermIP: '%s' ? ", rmt_ip_str);
-#endif
#if DEBUG
- fprintf(stderr, "'%u.%u.%u.%u/%u.%u.%u.%u'\n",
+ fprintf(stderr,
+ "checkPermIP: '%s' ? '%u.%u.%u.%u/%u.%u.%u.%u'\n",
+ rmt_ip_str,
(unsigned char)(cur->ip >> 24),
(unsigned char)(cur->ip >> 16),
(unsigned char)(cur->ip >> 8),
@@ -1539,7 +1525,6 @@ static void handle_sigalrm(int sig)
static void handle_incoming_and_exit(void) ATTRIBUTE_NORETURN;
static void handle_incoming_and_exit(void)
{
- char *buf = iobuf;
char *url;
char *purl;
int blank = -1;
@@ -1569,10 +1554,10 @@ static void handle_incoming_and_exit(void)
int count;
alarm(TIMEOUT);
- if (getLine() <= 0)
- break; /* closed */
+ if (!get_line())
+ break; /* EOF or error or empty line */
- purl = strpbrk(buf, " \t");
+ purl = strpbrk(iobuf, " \t");
if (purl == NULL) {
BAD_REQUEST:
sendHeaders(HTTP_BAD_REQUEST);
@@ -1580,32 +1565,32 @@ static void handle_incoming_and_exit(void)
}
*purl = '\0';
#if ENABLE_FEATURE_HTTPD_CGI
- if (strcasecmp(buf, prequest) != 0) {
+ if (strcasecmp(iobuf, prequest) != 0) {
prequest = "POST";
- if (strcasecmp(buf, prequest) != 0) {
+ if (strcasecmp(iobuf, prequest) != 0) {
sendHeaders(HTTP_NOT_IMPLEMENTED);
break;
}
}
#else
- if (strcasecmp(buf, request_GET) != 0) {
+ if (strcasecmp(iobuf, request_GET) != 0) {
sendHeaders(HTTP_NOT_IMPLEMENTED);
break;
}
#endif
*purl = ' ';
- count = sscanf(purl, " %[^ ] HTTP/%d.%*d", buf, &blank);
+ count = sscanf(purl, " %[^ ] HTTP/%d.%*d", iobuf, &blank);
- if (count < 1 || buf[0] != '/') {
+ if (count < 1 || iobuf[0] != '/') {
/* Garbled request/URL */
goto BAD_REQUEST;
}
- url = alloca(strlen(buf) + sizeof("/index.html"));
+ url = alloca(strlen(iobuf) + sizeof("/index.html"));
if (url == NULL) {
sendHeaders(HTTP_INTERNAL_SERVER_ERROR);
break;
}
- strcpy(url, buf);
+ strcpy(url, iobuf);
/* extract url args if present */
test = strchr(url, '?');
g_query = NULL;
@@ -1641,7 +1626,7 @@ static void handle_incoming_and_exit(void)
if (test[1] == '.' && (test[2] == '/' || !test[2])) {
++test;
if (purl == url) {
- /* protect out root */
+ /* protect root */
goto BAD_REQUEST;
}
while (*--purl != '/') /* omit previous dir */;
@@ -1660,8 +1645,11 @@ static void handle_incoming_and_exit(void)
found_moved_temporarily = url;
}
}
- if (DEBUG)
- fprintf(stderr, "url='%s', args=%s\n", url, g_query);
+ if (verbose > 1) {
+ /* Hopefully does it with single write[v] */
+ /* (uclibc does, glibc: ?) */
+ fdprintf(2, "%s url:%s\n", rmt_ip_str, url);
+ }
test = url;
ip_allowed = checkPermIP();
@@ -1679,18 +1667,18 @@ static void handle_incoming_and_exit(void)
/* read until blank line for HTTP version specified, else parse immediate */
while (1) {
alarm(TIMEOUT);
- if (getLine() <= 0)
- break;
+ if (!get_line())
+ break; /* EOF or error or empty line */
if (DEBUG)
- fprintf(stderr, "header: '%s'\n", buf);
+ fprintf(stderr, "header: '%s'\n", iobuf);
#if ENABLE_FEATURE_HTTPD_CGI
/* try and do our best to parse more lines */
- if ((STRNCASECMP(buf, "Content-length:") == 0)) {
+ if ((STRNCASECMP(iobuf, "Content-length:") == 0)) {
/* extra read only for POST */
if (prequest != request_GET) {
- test = buf + sizeof("Content-length:") - 1;
+ test = iobuf + sizeof("Content-length:") - 1;
if (!test[0])
goto bail_out;
errno = 0;
@@ -1702,24 +1690,24 @@ static void handle_incoming_and_exit(void)
if (test[0] || errno || length > INT_MAX)
goto bail_out;
}
- } else if (STRNCASECMP(buf, "Cookie:") == 0) {
- cookie = strdup(skip_whitespace(buf + sizeof("Cookie:")-1));
- } else if (STRNCASECMP(buf, "Content-Type:") == 0) {
- content_type = strdup(skip_whitespace(buf + sizeof("Content-Type:")-1));
- } else if (STRNCASECMP(buf, "Referer:") == 0) {
- referer = strdup(skip_whitespace(buf + sizeof("Referer:")-1));
- } else if (STRNCASECMP(buf, "User-Agent:") == 0) {
- user_agent = strdup(skip_whitespace(buf + sizeof("User-Agent:")-1));
+ } else if (STRNCASECMP(iobuf, "Cookie:") == 0) {
+ cookie = strdup(skip_whitespace(iobuf + sizeof("Cookie:")-1));
+ } else if (STRNCASECMP(iobuf, "Content-Type:") == 0) {
+ content_type = strdup(skip_whitespace(iobuf + sizeof("Content-Type:")-1));
+ } else if (STRNCASECMP(iobuf, "Referer:") == 0) {
+ referer = strdup(skip_whitespace(iobuf + sizeof("Referer:")-1));
+ } else if (STRNCASECMP(iobuf, "User-Agent:") == 0) {
+ user_agent = strdup(skip_whitespace(iobuf + sizeof("User-Agent:")-1));
}
#endif
#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
- if (STRNCASECMP(buf, "Authorization:") == 0) {
+ if (STRNCASECMP(iobuf, "Authorization:") == 0) {
/* We only allow Basic credentials.
* It shows up as "Authorization: Basic <userid:password>" where
* the userid:password is base64 encoded.
*/
- test = skip_whitespace(buf + sizeof("Authorization:")-1);
+ test = skip_whitespace(iobuf + sizeof("Authorization:")-1);
if (STRNCASECMP(test, "Basic") != 0)
continue;
test += sizeof("Basic")-1;
@@ -1762,7 +1750,7 @@ static void handle_incoming_and_exit(void)
#if ENABLE_FEATURE_HTTPD_CGI
if (strncmp(test, "cgi-bin", 7) == 0) {
- if (test[7] == '/' && test[8] == 0)
+ if (test[7] == '/' && test[8] == '\0')
goto FORBIDDEN; /* protect listing cgi-bin/ */
sendCgi(url, prequest, length, cookie, content_type);
break;
@@ -1839,7 +1827,7 @@ static void handle_incoming_and_exit(void)
tv.tv_sec = 2;
tv.tv_usec = 0;
retval = select(accepted_socket + 1, &s_fd, NULL, NULL, &tv);
- } while (retval > 0 && read(accepted_socket, buf, sizeof(iobuf) > 0));
+ } while (retval > 0 && read(accepted_socket, iobuf, sizeof(iobuf) > 0));
shutdown(accepted_socket, SHUT_RD);
close(accepted_socket);
exit(0);
@@ -1883,13 +1871,12 @@ static void mini_httpd(int server)
accepted_socket = s;
rmt_ip = 0;
tcp_port = 0;
-#if ENABLE_FEATURE_HTTPD_CGI || DEBUG
- free(rmt_ip_str);
- rmt_ip_str = xmalloc_sockaddr2dotted(&fromAddr.sa, fromAddrLen);
-#if DEBUG
- bb_error_msg("connection from '%s'", rmt_ip_str);
-#endif
-#endif /* FEATURE_HTTPD_CGI */
+ if (verbose || ENABLE_FEATURE_HTTPD_CGI || DEBUG) {
+ free(rmt_ip_str);
+ rmt_ip_str = xmalloc_sockaddr2dotted(&fromAddr.sa, fromAddrLen);
+ if (DEBUG)
+ bb_error_msg("connection from '%s'", rmt_ip_str);
+ }
if (fromAddr.sa.sa_family == AF_INET) {
rmt_ip = ntohl(fromAddr.sin.sin_addr.s_addr);
tcp_port = ntohs(fromAddr.sin.sin_port);
@@ -1932,10 +1919,10 @@ static void mini_httpd_inetd(void)
getpeername(0, &fromAddr.sa, &fromAddrLen);
rmt_ip = 0;
tcp_port = 0;
-#if ENABLE_FEATURE_HTTPD_CGI || DEBUG
- free(rmt_ip_str);
- rmt_ip_str = xmalloc_sockaddr2dotted(&fromAddr.sa, fromAddrLen);
-#endif
+ if (verbose || ENABLE_FEATURE_HTTPD_CGI || DEBUG) {
+ free(rmt_ip_str);
+ rmt_ip_str = xmalloc_sockaddr2dotted(&fromAddr.sa, fromAddrLen);
+ }
if (fromAddr.sa.sa_family == AF_INET) {
rmt_ip = ntohl(fromAddr.sin.sin_addr.s_addr);
tcp_port = ntohs(fromAddr.sin.sin_port);
@@ -1974,6 +1961,7 @@ enum {
p_opt_port ,
p_opt_inetd ,
p_opt_foreground,
+ p_opt_verbose ,
OPT_CONFIG_FILE = 1 << c_opt_config_file,
OPT_DECODE_URL = 1 << d_opt_decode_url,
OPT_HOME_HTTPD = 1 << h_opt_home_httpd,
@@ -1984,6 +1972,7 @@ enum {
OPT_PORT = 1 << p_opt_port,
OPT_INETD = 1 << p_opt_inetd,
OPT_FOREGROUND = 1 << p_opt_foreground,
+ OPT_VERBOSE = 1 << p_opt_verbose,
};
@@ -2004,6 +1993,7 @@ int httpd_main(int argc, char **argv)
INIT_G();
home_httpd = xrealloc_getcwd_or_warn(NULL);
+ opt_complementary = "vv"; /* counter */
/* We do not "absolutize" path given by -h (home) opt.
* If user gives relative path in -h, $SCRIPT_FILENAME can end up
* relative too. */
@@ -2012,13 +2002,14 @@ int httpd_main(int argc, char **argv)
USE_FEATURE_HTTPD_BASIC_AUTH("r:")
USE_FEATURE_HTTPD_AUTH_MD5("m:")
USE_FEATURE_HTTPD_SETUID("u:")
- "p:if",
- &(configFile), &url_for_decode, &home_httpd
+ "p:ifv",
+ &configFile, &url_for_decode, &home_httpd
USE_FEATURE_HTTPD_ENCODE_URL_STR(, &url_for_encode)
USE_FEATURE_HTTPD_BASIC_AUTH(, &g_realm)
USE_FEATURE_HTTPD_AUTH_MD5(, &pass)
USE_FEATURE_HTTPD_SETUID(, &s_ugid)
, &bind_addr_or_port
+ , &verbose
);
if (opt & OPT_DECODE_URL) {
printf("%s", decodeString(url_for_decode, 1));
@@ -2036,7 +2027,6 @@ int httpd_main(int argc, char **argv)
return 0;
}
#endif
-
#if ENABLE_FEATURE_HTTPD_SETUID
if (opt & OPT_SETUID) {
if (!get_uidgid(&ugid, s_ugid, 1))
generated by cgit v1.1 at 2024-12-30 22:46:16 +0000