httpd shrink and logging update, part 5 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
91adf7d587
commit
073214f894
@ -20,7 +20,7 @@
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* httpd -p 80 -u 80 -h /www -c /etc/httpd.conf -r "Web Server Authentication"
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*
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*
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* When a url contains "cgi-bin" it is assumed to be a cgi script. The
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* When a url starts by "/cgi-bin/" it is assumed to be a cgi script. The
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* server changes directory to the location of the script and executes it
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* after setting QUERY_STRING and other environment variables.
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*
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@ -89,44 +89,45 @@
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* root configuration file. If -c is set and the file is not found, the
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* server exits with an error.
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*
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*/
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*/
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#include "libbb.h"
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#if ENABLE_FEATURE_HTTPD_USE_SENDFILE
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#include <sys/sendfile.h>
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#endif
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//#define DEBUG 1
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#define DEBUG 0
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/* amount of buffering in a pipe */
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#ifndef PIPE_BUF
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# define PIPE_BUF 4096
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#endif
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#define MAX_MEMORY_BUF 8192 /* IO buffer */
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#define HEADER_READ_TIMEOUT 60
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static const char default_path_httpd_conf[] ALIGN1 = "/etc";
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static const char httpd_conf[] ALIGN1 = "httpd.conf";
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#define TIMEOUT 60
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// Note: busybox xfuncs are not used because we want the server to keep running
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// if something bad happens due to a malformed user request.
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// As a result, all memory allocations after daemonize
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// are checked rigorously
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//#define DEBUG 1
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#define DEBUG 0
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#define MAX_MEMORY_BUF 8192 /* IO buffer */
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typedef struct has_next_ptr {
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struct has_next_ptr *next;
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} has_next_ptr;
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/* Must have "next" as a first member */
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typedef struct Htaccess {
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char *after_colon;
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struct Htaccess *next;
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char *after_colon;
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char before_colon[1]; /* really bigger, must be last */
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} Htaccess;
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/* Must have "next" as a first member */
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typedef struct Htaccess_IP {
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struct Htaccess_IP *next;
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unsigned ip;
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unsigned mask;
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int allow_deny;
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struct Htaccess_IP *next;
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} Htaccess_IP;
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struct globals {
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@ -199,30 +200,6 @@ struct globals {
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ContentLength = -1; \
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} while (0)
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static const char request_GET[] ALIGN1 = "GET"; /* size algorithmic optimize */
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static const char *const suffixTable[] = {
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/* Warning: shorter equivalent suffix in one line must be first */
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".htm.html", "text/html",
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".jpg.jpeg", "image/jpeg",
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".gif", "image/gif",
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".png", "image/png",
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".txt.h.c.cc.cpp", "text/plain",
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".css", "text/css",
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".wav", "audio/wav",
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".avi", "video/x-msvideo",
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".qt.mov", "video/quicktime",
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".mpe.mpeg", "video/mpeg",
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".mid.midi", "audio/midi",
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".mp3", "audio/mpeg",
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#if 0 /* unpopular */
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".au", "audio/basic",
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".pac", "application/x-ns-proxy-autoconfig",
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".vrml.wrl", "model/vrml",
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#endif
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0, "application/octet-stream" /* default */
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};
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typedef enum {
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HTTP_OK = 200,
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HTTP_MOVED_TEMPORARILY = 302,
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@ -285,11 +262,32 @@ static const HttpEnumString httpResponseNames[] = {
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};
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static const char RFC1123FMT[] ALIGN1 = "%a, %d %b %Y %H:%M:%S GMT";
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#define STRNCASECMP(a, str) strncasecmp((a), (str), sizeof(str)-1)
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static void free_llist(has_next_ptr **pptr)
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{
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has_next_ptr *cur = *pptr;
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while (cur) {
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has_next_ptr *t = cur;
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cur = cur->next;
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free(t);
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}
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*pptr = NULL;
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}
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#if ENABLE_FEATURE_HTTPD_BASIC_AUTH \
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|| ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES \
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|| ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
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static ALWAYS_INLINE void free_Htaccess_list(Htaccess **pptr)
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{
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free_llist((has_next_ptr**)pptr);
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}
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#endif
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static ALWAYS_INLINE void free_Htaccess_IP_list(Htaccess_IP **pptr)
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{
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free_llist((has_next_ptr**)pptr);
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}
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static int scan_ip(const char **ep, unsigned *ip, unsigned char endc)
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{
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@ -365,33 +363,8 @@ static int scan_ip_mask(const char *ipm, unsigned *ip, unsigned *mask)
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return 0;
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}
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#if ENABLE_FEATURE_HTTPD_BASIC_AUTH \
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|| ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES \
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|| ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
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static void free_config_lines(Htaccess **pprev)
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{
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Htaccess *prev = *pprev;
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while (prev) {
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Htaccess *cur = prev;
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prev = cur->next;
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free(cur);
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}
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*pprev = NULL;
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}
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#endif
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/* flag */
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#define FIRST_PARSE 0
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#define SUBDIR_PARSE 1
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#define SIGNALED_PARSE 2
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#define FIND_FROM_HTTPD_ROOT 3
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/****************************************************************************
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*
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> $Function: parse_conf()
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*
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* $Description: parse configuration file into in-memory linked list.
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/*
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* Parse configuration file into in-memory linked list.
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*
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* The first non-white character is examined to determine if the config line
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* is one of the following:
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@ -404,14 +377,14 @@ static void free_config_lines(Htaccess **pprev)
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* are also discarded. That is, previous settings are retained if flag is
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* SUBDIR_PARSE.
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*
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* $Parameters:
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* (const char *) path . . null for ip address checks, path for password
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* checks.
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* (int) flag . . . . . . the source of the parse request.
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*
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* $Return: (None)
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*
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****************************************************************************/
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* path Path where to look for httpd.conf (without filename).
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* flag Type of the parse request.
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*/
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/* flag */
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#define FIRST_PARSE 0
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#define SUBDIR_PARSE 1
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#define SIGNALED_PARSE 2
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#define FIND_FROM_HTTPD_ROOT 3
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static void parse_conf(const char *path, int flag)
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{
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FILE *f;
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@ -423,38 +396,28 @@ static void parse_conf(const char *path, int flag)
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|| ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
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Htaccess *cur;
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#endif
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const char *cf = configFile;
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char buf[160];
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char *p0 = NULL;
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char *c, *p;
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Htaccess_IP *pip;
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/* free previous ip setup if present */
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Htaccess_IP *pip = ip_a_d;
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while (pip) {
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Htaccess_IP *cur_ipl = pip;
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pip = cur_ipl->next;
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free(cur_ipl);
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}
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ip_a_d = NULL;
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/* discard old rules */
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free_Htaccess_IP_list(&ip_a_d);
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flg_deny_all = 0;
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#if ENABLE_FEATURE_HTTPD_BASIC_AUTH \
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|| ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES \
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|| ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
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/* retain previous auth and mime config only for subdir parse */
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if (flag != SUBDIR_PARSE) {
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#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
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free_config_lines(&g_auth);
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free_Htaccess_list(&g_auth);
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#endif
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#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
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free_config_lines(&mime_a);
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free_Htaccess_list(&mime_a);
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#endif
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#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
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free_config_lines(&script_i);
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free_Htaccess_list(&script_i);
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#endif
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}
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#endif
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@ -463,7 +426,7 @@ static void parse_conf(const char *path, int flag)
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cf = alloca(strlen(path) + sizeof(httpd_conf) + 2);
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if (cf == NULL) {
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if (flag == FIRST_PARSE)
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bb_error_msg_and_die(bb_msg_memory_exhausted);
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bb_error_msg_and_die(bb_msg_memory_exhausted);
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return;
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}
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sprintf((char *)cf, "%s/%s", path, httpd_conf);
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@ -486,21 +449,21 @@ static void parse_conf(const char *path, int flag)
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/* This could stand some work */
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while ((p0 = fgets(buf, sizeof(buf), f)) != NULL) {
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c = NULL;
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for (p = p0; *p0 != 0 && *p0 != '#'; p0++) {
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for (p = p0; *p0 != '\0' && *p0 != '#'; p0++) {
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if (!isspace(*p0)) {
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*p++ = *p0;
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if (*p0 == ':' && c == NULL)
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c = p;
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c = p;
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}
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}
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*p = 0;
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*p = '\0';
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/* test for empty or strange line */
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if (c == NULL || *c == 0)
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if (c == NULL || *c == '\0')
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continue;
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p0 = buf;
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if (*p0 == 'd')
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*p0 = 'D';
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*p0 = 'D';
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if (*c == '*') {
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if (*p0 == 'D') {
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/* memorize deny all */
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@ -535,7 +498,7 @@ static void parse_conf(const char *path, int flag)
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}
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pip->allow_deny = *p0;
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if (*p0 == 'D') {
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/* Deny:form_IP move top */
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/* Deny:from_IP move top */
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pip->next = ip_a_d;
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ip_a_d = pip;
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} else {
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@ -555,12 +518,12 @@ static void parse_conf(const char *path, int flag)
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}
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#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
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if (*p0 == '/') {
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/* make full path from httpd root / curent_path / config_line_path */
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cf = flag == SUBDIR_PARSE ? path : "";
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/* make full path from httpd root / current_path / config_line_path */
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cf = (flag == SUBDIR_PARSE ? path : "");
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p0 = malloc(strlen(cf) + (c - buf) + 2 + strlen(c));
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if (p0 == NULL)
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continue;
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c[-1] = 0;
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c[-1] = '\0';
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sprintf(p0, "/%s%s", cf, buf);
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/* another call bb_simplify_path */
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@ -571,9 +534,9 @@ static void parse_conf(const char *path, int flag)
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if (*cf == '/') { /* skip duplicate (or initial) slash */
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continue;
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} else if (*cf == '.') {
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if (cf[1] == '/' || cf[1] == 0) { /* remove extra '.' */
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if (cf[1] == '/' || cf[1] == '\0') { /* remove extra '.' */
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continue;
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} else if ((cf[1] == '.') && (cf[2] == '/' || cf[2] == 0)) {
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} else if ((cf[1] == '.') && (cf[2] == '/' || cf[2] == '\0')) {
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++cf;
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if (p > p0) {
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while (*--p != '/') /* omit previous dir */;
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@ -588,7 +551,7 @@ static void parse_conf(const char *path, int flag)
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if ((p == p0) || (*p != '/')) { /* not a trailing slash */
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++p; /* so keep last character */
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}
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*p = 0;
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*p = '\0';
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sprintf(p0, "%s:%s", p0, c);
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}
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#endif
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@ -658,23 +621,14 @@ static void parse_conf(const char *path, int flag)
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}
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#if ENABLE_FEATURE_HTTPD_ENCODE_URL_STR
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/****************************************************************************
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/*
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* Given a string, html-encode special characters.
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* This is used for the -e command line option to provide an easy way
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* for scripts to encode result data without confusing browsers. The
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* returned string pointer is memory allocated by malloc().
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*
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> $Function: encodeString()
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*
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* $Description: Given a string, html encode special characters.
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* This is used for the -e command line option to provide an easy way
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* for scripts to encode result data without confusing browsers. The
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* returned string pointer is memory allocated by malloc().
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*
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* $Parameters:
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* (const char *) string . . The first string to encode.
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*
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* $Return: (char *) . . . .. . . A pointer to the encoded string.
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*
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* $Errors: Returns a null string ("") if memory is not available.
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*
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****************************************************************************/
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* Returns a pointer to the encoded string (malloced).
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*/
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static char *encodeString(const char *string)
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{
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/* take the simple route and encode everything */
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@ -694,25 +648,18 @@ static char *encodeString(const char *string)
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}
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#endif /* FEATURE_HTTPD_ENCODE_URL_STR */
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/****************************************************************************
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/*
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* Given a URL encoded string, convert it to plain ascii.
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* Since decoding always makes strings smaller, the decode is done in-place.
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* Thus, callers should strdup() the argument if they do not want the
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* argument modified. The return is the original pointer, allowing this
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* function to be easily used as arguments to other functions.
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*
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> $Function: decodeString()
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* string The first string to decode.
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* option_d 1 if called for httpd -d
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*
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* $Description: Given a URL encoded string, convert it to plain ascii.
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* Since decoding always makes strings smaller, the decode is done in-place.
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* Thus, callers should strdup() the argument if they do not want the
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* argument modified. The return is the original pointer, allowing this
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* function to be easily used as arguments to other functions.
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*
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* $Parameters:
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* (char *) string . . . The first string to decode.
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* (int) option_d . . 1 if called for httpd -d
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*
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* $Return: (char *) . . . . A pointer to the decoded string (same as input).
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*
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* $Errors: None
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*
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****************************************************************************/
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* Returns a pointer to the decoded string (same as input).
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*/
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static char *decodeString(char *orig, int option_d)
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{
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/* note that decoded string is always shorter than original */
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@ -754,9 +701,9 @@ static char *decodeString(char *orig, int option_d)
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#if ENABLE_FEATURE_HTTPD_CGI
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/****************************************************************************
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/*
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* setenv helpers
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****************************************************************************/
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*/
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static void setenv1(const char *name, const char *value)
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{
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if (!value)
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@ -773,10 +720,10 @@ static void setenv_long(const char *name, long value)
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#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
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/*
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* Decode a base 64 data stream as per rfc1521.
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* Decode a base64 data stream as per rfc1521.
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* Note that the rfc states that non base64 chars are to be ignored.
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* Since the decode always results in a shorter size than the input, it is
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* OK to pass the input arg as an output arg.
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* Since the decode always results in a shorter size than the input,
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* it is OK to pass the input arg as an output arg.
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* Parameter: a pointer to a base64 encoded string.
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* Decoded data is stored in-place.
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*/
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@ -818,18 +765,9 @@ static void decodeBase64(char *Data)
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}
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#endif
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/****************************************************************************
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*
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> $Function: openServer()
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*
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* $Description: create a listen server socket on the designated port.
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*
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* $Return: (int) . . . A connection socket. -1 for errors.
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*
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* $Errors: None
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*
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||||
****************************************************************************/
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/*
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* Create a listen server socket on the designated port.
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*/
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#if BB_MMU
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static int openServer(void)
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{
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@ -853,6 +791,8 @@ static int openServer(void)
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*/
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static int sendHeaders(HttpResponseNum responseNum)
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{
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static const char RFC1123FMT[] ALIGN1 = "%a, %d %b %Y %H:%M:%S GMT";
|
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|
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const char *responseString = "";
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const char *infoString = NULL;
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const char *mime_type;
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@ -1318,6 +1258,28 @@ static void send_cgi_and_exit(
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static void send_file_and_exit(const char *url) ATTRIBUTE_NORETURN;
|
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static void send_file_and_exit(const char *url)
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{
|
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static const char *const suffixTable[] = {
|
||||
/* Warning: shorter equivalent suffix in one line must be first */
|
||||
".htm.html", "text/html",
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||||
".jpg.jpeg", "image/jpeg",
|
||||
".gif", "image/gif",
|
||||
".png", "image/png",
|
||||
".txt.h.c.cc.cpp", "text/plain",
|
||||
".css", "text/css",
|
||||
".wav", "audio/wav",
|
||||
".avi", "video/x-msvideo",
|
||||
".qt.mov", "video/quicktime",
|
||||
".mpe.mpeg", "video/mpeg",
|
||||
".mid.midi", "audio/midi",
|
||||
".mp3", "audio/mpeg",
|
||||
#if 0 /* unpopular */
|
||||
".au", "audio/basic",
|
||||
".pac", "application/x-ns-proxy-autoconfig",
|
||||
".vrml.wrl", "model/vrml",
|
||||
#endif
|
||||
NULL
|
||||
};
|
||||
|
||||
char *suffix;
|
||||
int f;
|
||||
int fd;
|
||||
@ -1330,25 +1292,31 @@ static void send_file_and_exit(const char *url)
|
||||
|
||||
suffix = strrchr(url, '.');
|
||||
|
||||
for (table = suffixTable; *table; table += 2)
|
||||
if (suffix != NULL && (try_suffix = strstr(*table, suffix)) != 0) {
|
||||
try_suffix += strlen(suffix);
|
||||
if (*try_suffix == 0 || *try_suffix == '.')
|
||||
break;
|
||||
}
|
||||
/* also, if not found, set default as "application/octet-stream"; */
|
||||
found_mime_type = table[1];
|
||||
#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
|
||||
/* If not found, set default as "application/octet-stream"; */
|
||||
found_mime_type = "application/octet-stream";
|
||||
if (suffix) {
|
||||
Htaccess * cur;
|
||||
#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
|
||||
Htaccess *cur;
|
||||
#endif
|
||||
for (table = suffixTable; *table; table += 2) {
|
||||
try_suffix = strstr(table[0], suffix);
|
||||
if (try_suffix) {
|
||||
try_suffix += strlen(suffix);
|
||||
if (*try_suffix == '\0' || *try_suffix == '.') {
|
||||
found_mime_type = table[1];
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
|
||||
for (cur = mime_a; cur; cur = cur->next) {
|
||||
if (strcmp(cur->before_colon, suffix) == 0) {
|
||||
found_mime_type = cur->after_colon;
|
||||
break;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
}
|
||||
#endif /* FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES */
|
||||
|
||||
if (DEBUG)
|
||||
bb_error_msg("sending file '%s' content-type: %s",
|
||||
@ -1426,27 +1394,21 @@ static int checkPermIP(void)
|
||||
return !flg_deny_all;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
/*
|
||||
* Check the permission file for access password protected.
|
||||
*
|
||||
> $Function: checkPerm()
|
||||
* If config file isn't present, everything is allowed.
|
||||
* Entries are of the form you can see example from header source
|
||||
*
|
||||
* $Description: Check the permission file for access password protected.
|
||||
* path The file path.
|
||||
* request User information to validate.
|
||||
*
|
||||
* If config file isn't present, everything is allowed.
|
||||
* Entries are of the form you can see example from header source
|
||||
*
|
||||
* $Parameters:
|
||||
* (const char *) path . . . . The file path.
|
||||
* (const char *) request . . . User information to validate.
|
||||
*
|
||||
* $Return: (int) . . . . . . . . . 1 if request OK, 0 otherwise.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
* Returns 1 if request is OK.
|
||||
*/
|
||||
#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
|
||||
static int checkPerm(const char *path, const char *request)
|
||||
{
|
||||
Htaccess * cur;
|
||||
Htaccess *cur;
|
||||
const char *p;
|
||||
const char *p0;
|
||||
|
||||
@ -1481,7 +1443,7 @@ static int checkPerm(const char *path, const char *request)
|
||||
char *cipher;
|
||||
char *pp;
|
||||
|
||||
if (strncmp(p, request, u-request) != 0) {
|
||||
if (strncmp(p, request, u - request) != 0) {
|
||||
/* user uncompared */
|
||||
continue;
|
||||
}
|
||||
@ -1528,15 +1490,17 @@ static void exit_on_signal(int sig)
|
||||
static void handle_incoming_and_exit(void) ATTRIBUTE_NORETURN;
|
||||
static void handle_incoming_and_exit(void)
|
||||
{
|
||||
static const char request_GET[] ALIGN1 = "GET";
|
||||
|
||||
char *url;
|
||||
char *purl;
|
||||
int count;
|
||||
int blank = -1;
|
||||
int http_major_version;
|
||||
char *test;
|
||||
struct stat sb;
|
||||
int ip_allowed;
|
||||
#if ENABLE_FEATURE_HTTPD_CGI
|
||||
const char *prequest = request_GET;
|
||||
const char *prequest;
|
||||
unsigned long length = 0;
|
||||
char *cookie = 0;
|
||||
char *content_type = 0;
|
||||
@ -1546,21 +1510,24 @@ static void handle_incoming_and_exit(void)
|
||||
int credentials = -1; /* if not required this is Ok */
|
||||
#endif
|
||||
|
||||
/* Install timeout handler */
|
||||
sa.sa_handler = exit_on_signal;
|
||||
sigemptyset(&sa.sa_mask);
|
||||
sa.sa_flags = 0; /* no SA_RESTART */
|
||||
sigaction(SIGALRM, &sa, NULL);
|
||||
alarm(HEADER_READ_TIMEOUT);
|
||||
|
||||
alarm(TIMEOUT);
|
||||
if (!get_line())
|
||||
_exit(0); /* EOF or error or empty line */
|
||||
|
||||
/* Determine type of request (GET/POST) */
|
||||
purl = strpbrk(iobuf, " \t");
|
||||
if (purl == NULL) {
|
||||
send_headers_and_exit(HTTP_BAD_REQUEST);
|
||||
}
|
||||
*purl = '\0';
|
||||
#if ENABLE_FEATURE_HTTPD_CGI
|
||||
prequest = request_GET;
|
||||
if (strcasecmp(iobuf, prequest) != 0) {
|
||||
prequest = "POST";
|
||||
if (strcasecmp(iobuf, prequest) != 0) {
|
||||
@ -1573,8 +1540,10 @@ static void handle_incoming_and_exit(void)
|
||||
}
|
||||
#endif
|
||||
*purl = ' ';
|
||||
count = sscanf(purl, " %[^ ] HTTP/%d.%*d", iobuf, &blank);
|
||||
|
||||
/* Copy URL from after "GET "/"POST " to stack-allocated char[] */
|
||||
http_major_version = -1;
|
||||
count = sscanf(purl, " %[^ ] HTTP/%d.%*d", iobuf, &http_major_version);
|
||||
if (count < 1 || iobuf[0] != '/') {
|
||||
/* Garbled request/URL */
|
||||
send_headers_and_exit(HTTP_BAD_REQUEST);
|
||||
@ -1584,7 +1553,8 @@ static void handle_incoming_and_exit(void)
|
||||
send_headers_and_exit(HTTP_INTERNAL_SERVER_ERROR);
|
||||
}
|
||||
strcpy(url, iobuf);
|
||||
/* extract url args if present */
|
||||
|
||||
/* Extract url args if present */
|
||||
test = strchr(url, '?');
|
||||
g_query = NULL;
|
||||
if (test) {
|
||||
@ -1592,6 +1562,7 @@ static void handle_incoming_and_exit(void)
|
||||
g_query = test;
|
||||
}
|
||||
|
||||
/* Decode URL escape sequences */
|
||||
test = decodeString(url, 0);
|
||||
if (test == NULL)
|
||||
send_headers_and_exit(HTTP_BAD_REQUEST);
|
||||
@ -1600,7 +1571,8 @@ static void handle_incoming_and_exit(void)
|
||||
send_headers_and_exit(HTTP_NOT_FOUND);
|
||||
}
|
||||
|
||||
/* algorithm stolen from libbb bb_simplify_path(),
|
||||
/* Canonicalize path */
|
||||
/* Algorithm stolen from libbb bb_simplify_path(),
|
||||
* but don't strdup and reducing trailing slash and protect out root */
|
||||
purl = test = url;
|
||||
do {
|
||||
@ -1631,13 +1603,14 @@ static void handle_incoming_and_exit(void)
|
||||
*++purl = '\0'; /* so keep last character */
|
||||
test = purl; /* end ptr */
|
||||
|
||||
/* If URL is directory, adding '/' */
|
||||
/* If URL is a directory, add '/' */
|
||||
if (test[-1] != '/') {
|
||||
if (is_directory(url + 1, 1, &sb)) {
|
||||
found_moved_temporarily = url;
|
||||
}
|
||||
}
|
||||
|
||||
/* Log it */
|
||||
if (verbose > 1)
|
||||
bb_error_msg("url:%s", url);
|
||||
|
||||
@ -1653,15 +1626,17 @@ static void handle_incoming_and_exit(void)
|
||||
}
|
||||
*test = '/';
|
||||
}
|
||||
if (blank >= 0) {
|
||||
/* read until blank line for HTTP version specified, else parse immediate */
|
||||
if (http_major_version >= 0) {
|
||||
/* Request was with "... HTTP/n.m", and n >= 0 */
|
||||
|
||||
/* Read until blank line for HTTP version specified, else parse immediate */
|
||||
while (1) {
|
||||
alarm(TIMEOUT);
|
||||
alarm(HEADER_READ_TIMEOUT);
|
||||
if (!get_line())
|
||||
break; /* EOF or error or empty line */
|
||||
|
||||
if (DEBUG)
|
||||
bb_error_msg("header: '%s'", iobuf);
|
||||
|
||||
#if ENABLE_FEATURE_HTTPD_CGI
|
||||
/* try and do our best to parse more lines */
|
||||
if ((STRNCASECMP(iobuf, "Content-length:") == 0)) {
|
||||
@ -1707,6 +1682,7 @@ static void handle_incoming_and_exit(void)
|
||||
} /* while extra header reading */
|
||||
}
|
||||
|
||||
/* We read everything, disable peer timeout */
|
||||
alarm(0);
|
||||
|
||||
if (strcmp(bb_basename(url), httpd_conf) == 0 || ip_allowed == 0) {
|
||||
@ -1727,9 +1703,9 @@ static void handle_incoming_and_exit(void)
|
||||
test = url + 1; /* skip first '/' */
|
||||
|
||||
#if ENABLE_FEATURE_HTTPD_CGI
|
||||
if (strncmp(test, "cgi-bin", 7) == 0) {
|
||||
if (test[7] == '/' && test[8] == '\0') {
|
||||
/* protect listing cgi-bin/ */
|
||||
if (strncmp(test, "cgi-bin/", 8) == 0) {
|
||||
if (test[8] == '\0') {
|
||||
/* protect listing "cgi-bin/" */
|
||||
send_headers_and_exit(HTTP_FORBIDDEN);
|
||||
}
|
||||
send_cgi_and_exit(url, prequest, length, cookie, content_type);
|
||||
@ -1768,7 +1744,11 @@ static void handle_incoming_and_exit(void)
|
||||
send_cgi_and_exit("/cgi-bin/index.cgi", prequest, length, cookie, content_type);
|
||||
}
|
||||
}
|
||||
#endif /* FEATURE_HTTPD_CGI */
|
||||
#endif
|
||||
/* else {
|
||||
* fall through to send_file, it errors out if open fails
|
||||
* }
|
||||
*/
|
||||
|
||||
send_file_and_exit(test);
|
||||
|
||||
@ -1813,6 +1793,11 @@ static void handle_incoming_and_exit(void)
|
||||
static void mini_httpd(int server) ATTRIBUTE_NORETURN;
|
||||
static void mini_httpd(int server)
|
||||
{
|
||||
/* NB: it's best to not use xfuncs in this loop before fork().
|
||||
* Otherwise server may die on transient errors (temporary
|
||||
* out-of-memory condition, etc), which is Bad(tm).
|
||||
* Try to do any dangerous calls after fork.
|
||||
*/
|
||||
while (1) {
|
||||
int n;
|
||||
len_and_sockaddr fromAddr;
|
||||
@ -1825,18 +1810,6 @@ static void mini_httpd(int server)
|
||||
continue;
|
||||
/* set the KEEPALIVE option to cull dead connections */
|
||||
setsockopt(n, SOL_SOCKET, SO_KEEPALIVE, &const_int_1, sizeof(const_int_1));
|
||||
accepted_socket = n;
|
||||
|
||||
n = get_nport(&fromAddr.sa);
|
||||
tcp_port = ntohs(n);
|
||||
rmt_ip = 0;
|
||||
if (fromAddr.sa.sa_family == AF_INET) {
|
||||
rmt_ip = ntohl(fromAddr.sin.sin_addr.s_addr);
|
||||
}
|
||||
if (ENABLE_FEATURE_HTTPD_CGI || DEBUG || verbose) {
|
||||
free(rmt_ip_str);
|
||||
rmt_ip_str = xmalloc_sockaddr2dotted(&fromAddr.sa, fromAddr.len);
|
||||
}
|
||||
|
||||
if (fork() == 0) {
|
||||
/* child */
|
||||
@ -1844,6 +1817,16 @@ static void mini_httpd(int server)
|
||||
/* Do not reload config on HUP */
|
||||
signal(SIGHUP, SIG_IGN);
|
||||
#endif
|
||||
accepted_socket = n;
|
||||
n = get_nport(&fromAddr.sa);
|
||||
tcp_port = ntohs(n);
|
||||
rmt_ip = 0;
|
||||
if (fromAddr.sa.sa_family == AF_INET) {
|
||||
rmt_ip = ntohl(fromAddr.sin.sin_addr.s_addr);
|
||||
}
|
||||
if (ENABLE_FEATURE_HTTPD_CGI || DEBUG || verbose) {
|
||||
rmt_ip_str = xmalloc_sockaddr2dotted(&fromAddr.sa, fromAddr.len);
|
||||
}
|
||||
if (verbose) {
|
||||
/* this trick makes -v logging much simpler */
|
||||
applet_name = rmt_ip_str;
|
||||
@ -1853,7 +1836,7 @@ static void mini_httpd(int server)
|
||||
handle_incoming_and_exit();
|
||||
}
|
||||
/* parent, or fork failed */
|
||||
close(accepted_socket);
|
||||
close(n);
|
||||
} /* while (1) */
|
||||
/* never reached */
|
||||
}
|
||||
@ -1883,12 +1866,13 @@ static void mini_httpd_inetd(void)
|
||||
#if ENABLE_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
|
||||
static void sighup_handler(int sig)
|
||||
{
|
||||
/* set and reset */
|
||||
struct sigaction sa;
|
||||
|
||||
parse_conf(default_path_httpd_conf, sig == SIGHUP ? SIGNALED_PARSE : FIRST_PARSE);
|
||||
|
||||
memset(&sa, 0, sizeof(sa));
|
||||
sa.sa_handler = sighup_handler;
|
||||
sigemptyset(&sa.sa_mask);
|
||||
/*sigemptyset(&sa.sa_mask); - memset should be enough */
|
||||
sa.sa_flags = SA_RESTART;
|
||||
sigaction(SIGHUP, &sa, NULL);
|
||||
}
|
||||
@ -1930,12 +1914,13 @@ int httpd_main(int argc, char **argv)
|
||||
USE_FEATURE_HTTPD_SETUID(struct bb_uidgid_t ugid;)
|
||||
USE_FEATURE_HTTPD_AUTH_MD5(const char *pass;)
|
||||
|
||||
INIT_G();
|
||||
|
||||
#if ENABLE_LOCALE_SUPPORT
|
||||
/* Undo busybox.c: we want to speak English in http (dates etc) */
|
||||
setlocale(LC_TIME, "C");
|
||||
#endif
|
||||
|
||||
INIT_G();
|
||||
home_httpd = xrealloc_getcwd_or_warn(NULL);
|
||||
opt_complementary = "vv"; /* counter */
|
||||
/* We do not "absolutize" path given by -h (home) opt.
|
||||
@ -2012,13 +1997,12 @@ int httpd_main(int argc, char **argv)
|
||||
}
|
||||
#endif
|
||||
|
||||
#if BB_MMU
|
||||
#if ENABLE_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
|
||||
sighup_handler(0);
|
||||
#else
|
||||
parse_conf(default_path_httpd_conf, FIRST_PARSE);
|
||||
#endif
|
||||
|
||||
#if BB_MMU
|
||||
if (opt & OPT_INETD)
|
||||
mini_httpd_inetd();
|
||||
if (!(opt & OPT_FOREGROUND))
|
||||
|
||||
Loading…
Reference in New Issue
Block a user