mirror of https://github.com/nealey/eris.git
Gut compile-time options, add command-line options
This commit is contained in:
Neale Pickett
parent
10258ec975
commit
18e2662b50
12
Makefile
12
Makefile
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@ -2,15 +2,7 @@ VERSION := $(shell head -n 1 CHANGES | tr -d :)
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CFLAGS = -DFNORD='"fnord/$(VERSION)"' -Wall -Werror
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all: fnord fnord-cgi fnord-idx
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fnord-cgi: CFLAGS += -DCGI
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fnord-cgi: fnord.c
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$(CC) $(CFLAGS) -o $@ $(LDFLAGS) $<
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fnord-idx: CFLAGS += -DDIR_LIST
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fnord-idx: fnord.c
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$(CC) $(CFLAGS) -o $@ $(LDFLAGS) $<
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all: fnord
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clean:
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rm -f *.[oa] fnord fnord-cgi fnord-idx
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rm -f *.[oa] fnord
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293
fnord.c
293
fnord.c
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@ -39,77 +39,6 @@
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#define DUMP_c(v) DUMPf("%s = %c", #v, v)
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#define DUMP_p(v) DUMPf("%s = %p", #v, v)
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/*
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* uncomment the following line to enable support for CGI
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*/
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// #define CGI
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#ifdef CGI
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/*
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* uncomment the following line to enable support for "index.cgi" That is:
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* if "index.html" is not present then look for "index.cgi"
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*/
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#define INDEX_CGI
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#endif
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/*
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* the following switch will make fnord normalize the Host: HTTP header
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* from "foo" to "foo:80"
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*/
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#define NORMALIZE_HOST
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/*
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* uncomment the following line to enable support for autogenerated
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* directory-listings for directories without index
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*/
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/*
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* #define DIR_LIST
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*/
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#ifdef DIR_LIST
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/*
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* uncomment the following line to enable support for system symlink
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* dereferencingr. HOPE YOU KNOW WHAT YOU'RE LINKING ! e.g.: if a file
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* foo is a symlink to /etc/passwd and you don't have a chroot enviroment
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* then the system-wide /etc/passwd is provided !!! If the symlink is
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* dangling OR this option is not active the symlink is provided as a new
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* http-uri. e.g.: is foo a symlink to /etc/passwd than the clinet gets a
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* href to http://<vhost>/etc/passwd
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*/
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/*
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* #define SYSTEM_SYMLINK_DEREF
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*/
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#endif
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/*
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* uncomment the following line to get full-host redirection. If a file is
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* not found locally, and $REDIRECT_HOST is set, fnord will issue a
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* redirect to strcat($REDIRECT_HOST,uri). Otherwise, if $REDIRECT_URI is
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* set, fnord will issue a redirect to $REDIRECT_URI. Only if those fail
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* will a 404 error be returned.
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*/
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#define OLD_STYLE_REDIRECT
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/*
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* uncomment the following line to get full-host redirection. if the
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* virtual host directory/symlink is a broken symlink, fnord will issue a
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* redirect. If the contents of the symlink starts with an equal sign
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* ('='), fnord will throw away the URI part.
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*/
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#define REDIRECT
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/*
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* uncomment the following line to make fnord chroot to the current
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* working directory and drop privileges
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*/
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#define CHROOT
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/*
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* uncomment the following line to make fnord support connection
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* keep-alive
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*/
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#define KEEPALIVE
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/*
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* the following is the time in seconds that fnord should wait for a valid
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* HTTP request
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@ -165,12 +94,9 @@ char *ua = "?"; /* user-agent */
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char *refer; /* Referrer: header */
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char *accept_enc; /* Accept-Encoding */
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int httpversion; /* 0 == 1.0, 1 == 1.1 */
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#ifdef KEEPALIVE
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int keepalive = 0; /* should we keep the connection alive? */
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int rootdir; /* fd of root directory, so we can fchdir
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* * back for keep-alive */
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#endif
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#ifdef CGI
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char *cookie; /* Referrer: header */
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char *uri; /* copy of url before demangling */
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char *content_type;
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@ -179,7 +105,6 @@ char *auth_type;
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char *post_miss;
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unsigned long post_mlen;
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unsigned long post_len = 0;
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#endif
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#if _FILE_OFFSET_BITS == 64
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static unsigned long long rangestart,
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@ -197,17 +122,16 @@ static const char months[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
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#define MAXHEADERLEN 8192
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char *remote_ip;
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#ifdef CGI
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char *remote_port;
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char *remote_ident;
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#endif
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static void
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sanitize(char *ua)
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{ /* replace strings with underscores for *
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* logging */
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int j;
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if (! ua) return;
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if (!ua)
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return;
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for (j = 0; ua[j]; ++j)
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if (isspace(ua[j]))
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ua[j] = '_';
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@ -222,7 +146,7 @@ dolog(off_t len)
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fprintf(stderr, "%s %ld %lu %s %s %s %s\n",
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remote_ip ? remote_ip : "0.0.0.0",
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retcode, (unsigned long)len, host, ua, refer, url);
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retcode, (unsigned long) len, host, ua, refer, url);
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}
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/*
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@ -245,7 +169,6 @@ badrequest(long code, const char *httpcomment, const char *message)
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exit(0);
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}
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#ifdef CGI
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#define CGIENVLEN 21
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static const char *cgivars[CGIENVLEN] = {
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@ -279,7 +202,7 @@ iscgivar(const char *s)
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register unsigned int i = 0;
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for (; i < CGIENVLEN; i++)
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if (! strncmp(s, cgivars[i], sl))
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if (!strncmp(s, cgivars[i], sl))
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return 1;
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return 0;
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}
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@ -300,7 +223,7 @@ env_append(const char *key, const char *val)
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static char *p = buf;
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char *ret = p;
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if (! key) {
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if (!key) {
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p = buf;
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return NULL;
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}
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@ -337,24 +260,35 @@ do_cgi(const char *pathinfo, const char *const *envp)
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cgi_env[i++] = env_append("REQUEST_METHOD", method_name[method]);
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cgi_env[i++] = env_append("REQUEST_URI", uri);
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cgi_env[i++] = env_append("SCRIPT_NAME", url);
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if (remote_ip) cgi_env[i++] = env_append("REMOTE_ADDR", remote_ip);
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if (remote_port) cgi_env[i++] = env_append("REMOTE_PORT", remote_port);
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if (remote_ident) cgi_env[i++] = env_append("REMOTE_IDENT", remote_ident);
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if (ua) cgi_env[i++] = env_append("HTTP_USER_AGENT", ua);
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if (cookie) cgi_env[i++] = env_append("HTTP_COOKIE", cookie);
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if (refer) cgi_env[i++] = env_append("HTTP_REFERER", refer);
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if (accept_enc) cgi_env[i++] = env_append("HTTP_ACCEPT_ENCODING", accept_enc);
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if (auth_type) cgi_env[i++] = env_append("AUTH_TYPE", auth_type);
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if (content_type) cgi_env[i++] = env_append("CONTENT_TYPE", content_type);
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if (content_type) cgi_env[i++] = env_append("CONTENT_LENGTH", content_len);
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if (args) cgi_env[i++] = env_append("QUERY_STRING", args);
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if (remote_ip)
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cgi_env[i++] = env_append("REMOTE_ADDR", remote_ip);
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if (remote_port)
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cgi_env[i++] = env_append("REMOTE_PORT", remote_port);
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if (remote_ident)
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cgi_env[i++] = env_append("REMOTE_IDENT", remote_ident);
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if (ua)
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cgi_env[i++] = env_append("HTTP_USER_AGENT", ua);
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if (cookie)
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cgi_env[i++] = env_append("HTTP_COOKIE", cookie);
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if (refer)
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cgi_env[i++] = env_append("HTTP_REFERER", refer);
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if (accept_enc)
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cgi_env[i++] = env_append("HTTP_ACCEPT_ENCODING", accept_enc);
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if (auth_type)
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cgi_env[i++] = env_append("AUTH_TYPE", auth_type);
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if (content_type)
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cgi_env[i++] = env_append("CONTENT_TYPE", content_type);
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if (content_type)
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cgi_env[i++] = env_append("CONTENT_LENGTH", content_len);
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if (args)
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cgi_env[i++] = env_append("QUERY_STRING", args);
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if (pathinfo) {
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char *rp = realpath(pathinfo, NULL);
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cgi_env[i++] = env_append("PATH_INFO", pathinfo);
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if (! rp) rp = pathinfo;
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cgi_env[i++] = env_append("PATH_TRANSLATED", rp);
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if (rp != pathinfo) free(rp);
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cgi_env[i++] = env_append("PATH_TRANSLATED", rp ? rp : pathinfo);
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if (rp)
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free(rp);
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}
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{
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@ -604,7 +538,6 @@ start_cgi(int nph, const char *pathinfo, const char *const *envp)
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}
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exit(0);
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}
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#endif
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static int
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fromhex(int c)
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@ -629,9 +562,7 @@ header(char *buf, int buflen, const char *hname)
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int i;
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char *c;
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DUMPf("buflen %d, slen %d", buflen, slen);
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for (i = 0; i < buflen - slen - 2; ++i) {
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DUMPf("[%.*s] [%s]", slen, buf + i, hname);
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if (!strncasecmp(buf + i, hname, slen)) {
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if (i && (buf[i - 1] && buf[i - 1] != '\n'))
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continue;
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@ -1083,9 +1014,7 @@ handleredirect(const char *url, const char *origurl)
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{
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char symlink[1024];
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int len;
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#ifdef OLD_STYLE_REDIRECT
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char *env;
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#endif
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while (*url == '/')
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++url;
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if ((len = readlink(url, symlink, 1023)) > 0) {
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@ -1094,32 +1023,14 @@ handleredirect(const char *url, const char *origurl)
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*/
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redirectboilerplate();
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printf("%.*s", len, symlink);
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#ifdef OLD_STYLE_REDIRECT
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fini:
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#endif
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retcode = 301;
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printf("\r\n\r\n");
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dolog(0);
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fflush(stdout);
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exit(0);
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}
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#ifdef OLD_STYLE_REDIRECT
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if ((env = getenv("REDIRECT_HOST"))) {
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redirectboilerplate();
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fputs(env, stdout);
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while (*origurl == '/')
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++origurl;
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fputs(origurl, stdout);
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goto fini;
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} else if ((env = getenv("REDIRECT_URI"))) {
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redirectboilerplate();
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fputs(env, stdout);
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goto fini;
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}
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#endif
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}
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#ifdef DIR_LIST
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static void
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hdl_encode_html(const char *s, unsigned int sl)
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{
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@ -1127,8 +1038,7 @@ hdl_encode_html(const char *s, unsigned int sl)
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for (i = 0; i < sl; ++i) {
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unsigned char ch = s[i];
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if (ch > 159) {
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encode_dec:
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printf("&#%lu;", ch);
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printf("&#%u;", ch);
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} else if ((ch > 128) || (ch < 32)) {
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putchar('_');
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} else if (ch == '"')
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@ -1173,7 +1083,7 @@ handledirlist(const char *origurl)
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&& ((st.st_mode & S_IRWXO) == 5)) {
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if (nl)
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chdir(nurl);
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if (dir = opendir(".")) {
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if ((dir = opendir("."))) {
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struct dirent *de;
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unsigned int i,
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size = 32 + nl;
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@ -1196,7 +1106,7 @@ handledirlist(const char *origurl)
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fputs("</a>\n", stdout);
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size += 40 + i;
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}
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while (de = readdir(dir)) {
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while ((de = readdir(dir))) {
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char symlink[1024];
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char *p = de->d_name;
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unsigned int pl,
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@ -1209,14 +1119,9 @@ handledirlist(const char *origurl)
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if (S_ISDIR(st.st_mode))
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fputs("[DIR] ", stdout);
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else if (S_ISLNK(st.st_mode)) {
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#ifdef SYSTEM_SYMLINK_DEREF
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if (stat(de->d_name, &st)) /* dangling symlink */
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#endif
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{
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if ((pl = readlink(de->d_name, symlink, 1023)) < 1)
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continue;
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p = symlink;
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}
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fputs("[LNK] ", stdout); /* a symlink to *
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* something ... */
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} else if (S_ISREG(st.st_mode))
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@ -1246,9 +1151,7 @@ handledirlist(const char *origurl)
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}
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}
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}
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#endif
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#ifdef INDEX_CGI
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static int
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handleindexcgi(const char *testurl, const char *origurl, char *space)
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{
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@ -1263,7 +1166,7 @@ handleindexcgi(const char *testurl, const char *origurl, char *space)
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test = space;
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++test;
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ul -= 4;
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byte_copy(test, ul, testurl);
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memcpy(test, testurl, ul);
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test[ul] = 'c';
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test[++ul] = 'g';
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test[++ul] = 'i';
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@ -1281,7 +1184,6 @@ handleindexcgi(const char *testurl, const char *origurl, char *space)
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url = test;
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return 1; /* Wow... now start "index.cgi" */
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}
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#endif
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static void
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get_ucspi_env(void)
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@ -1296,24 +1198,20 @@ get_ucspi_env(void)
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strcpy(buf + protolen, "REMOTEIP");
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remote_ip = getenv(buf);
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#ifdef CGI
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strcpy(buf + protolen, "REMOTEPORT");
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remote_port = getenv(buf);
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strcpy(buf + protolen, "REMOTEINFO");
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remote_ident = getenv(buf);
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#endif
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}
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}
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#ifdef CGI
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static int
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findcgi(const char *c)
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{
|
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return (c[0] == '.' && c[1] == 'c' &&
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c[2] == 'g' && c[3] == 'i' && (c[4] == '/' || c[4] == 0));
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}
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#endif
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static int
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serve_read_write(int fd)
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|
|
@ -1500,60 +1398,40 @@ int
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main(int argc, char *argv[], const char *const *envp)
|
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{
|
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char buf[MAXHEADERLEN];
|
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#if 0
|
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char buf2[MAXHEADERLEN];
|
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#endif
|
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char *nurl,
|
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*origurl;
|
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int docgi = 0;
|
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int dirlist = 0;
|
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int redirect = 0;
|
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int len;
|
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int in;
|
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|
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if (argc > 1)
|
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chdir(argv[1]);
|
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{
|
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int opt;
|
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|
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#ifdef CHROOT
|
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if (chroot(".")) {
|
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if (errno != EPERM)
|
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goto error500;
|
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/*
|
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* else fnord was called with uid!=0, i.e. it already is chroot
|
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*/
|
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} else {
|
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char *tmp;
|
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if (chdir("/"))
|
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goto error500;
|
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if ((tmp = getenv("GID"))) {
|
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long gid;
|
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char *endptr;
|
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|
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gid = strtoul(tmp, &endptr, 0);
|
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if (*endptr == 0) {
|
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gid_t gi = gid;
|
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if (setgroups(1, &gi))
|
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goto error500;
|
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} else
|
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goto error500;
|
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}
|
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if ((tmp = getenv("UID"))) {
|
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long uid;
|
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char *endptr;
|
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|
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uid = strtoul(tmp, &endptr, 0);
|
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if (*endptr == 0) {
|
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if (setuid(uid))
|
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goto error500;
|
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} else
|
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goto error500;
|
||||
while (-1 != (opt = getopt(argc, argv, "cdr"))) {
|
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switch (opt) {
|
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case 'c':
|
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docgi = 1;
|
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break;
|
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case 'd':
|
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dirlist = 1;
|
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break;
|
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case 'r':
|
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redirect = 1;
|
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break;
|
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default:
|
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fprintf(stderr, "%d Usage: %s [-d] [-r]\n", opt, argv[0]);
|
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return 69;
|
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}
|
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}
|
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#endif
|
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}
|
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|
||||
signal(SIGPIPE, SIG_IGN);
|
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get_ucspi_env();
|
||||
|
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#ifdef KEEPALIVE
|
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handlenext:
|
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encoding = 0;
|
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#endif
|
||||
// alarm(20);
|
||||
|
||||
{
|
||||
|
|
@ -1572,7 +1450,8 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
if (time(&now) < fini)
|
||||
continue; /* fall through */
|
||||
case -1: /* timeout or error */
|
||||
// badrequest(408,"Request Time-out","No request appeared
|
||||
// badrequest(408,"Request Time-out","No request
|
||||
// appeared
|
||||
// within a reasonable time period.");
|
||||
return 1;
|
||||
}
|
||||
|
|
@ -1626,9 +1505,7 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
"<title>Bad Request</title>Only HTTP 1.x supported");
|
||||
*space = 0;
|
||||
httpversion = space[8] - '0';
|
||||
#ifdef KEEPALIVE
|
||||
keepalive = 0;
|
||||
#endif
|
||||
|
||||
/*
|
||||
* demangle path in-place
|
||||
|
|
@ -1670,10 +1547,7 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
*/
|
||||
}
|
||||
|
||||
#ifdef CGI
|
||||
uri = alloca(space + 1);
|
||||
byte_copy(uri, space + 1, url);
|
||||
#endif
|
||||
uri = strdup(url);
|
||||
}
|
||||
|
||||
{
|
||||
|
|
@ -1681,31 +1555,27 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
ua = header(buf, len, "User-Agent");
|
||||
refer = header(buf, len, "Referer");
|
||||
accept_enc = header(buf, len, "Accept-Encoding");
|
||||
#ifdef KEEPALIVE
|
||||
if ((tmp = header(buf, len, "Connection"))) { /* see if it's
|
||||
* "keep-alive" or
|
||||
* * "close" */
|
||||
* "keep-alive"
|
||||
* or * "close" */
|
||||
if (!strcasecmp(tmp, "keep-alive"))
|
||||
keepalive = 1;
|
||||
else if (!strcasecmp(tmp, "close"))
|
||||
keepalive = -1;
|
||||
}
|
||||
#endif
|
||||
#ifdef CGI
|
||||
cookie = header(buf, len, "Cookie");
|
||||
auth_type = header(buf, len, "Authorization");
|
||||
if (method == POST) {
|
||||
content_type = header(buf, len, "Content-Type");
|
||||
content_len = header(buf, len, "Content-Length");
|
||||
if (content_len) {
|
||||
scan_ulong(content_len, &post_len);
|
||||
post_len = strtoul(content_len, NULL, 10);
|
||||
post_miss = buf + len + 1;
|
||||
post_mlen = in - len - 1;
|
||||
if (post_len <= post_mlen)
|
||||
post_mlen = post_len;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
port = getenv("TCPLOCALPORT");
|
||||
|
|
@ -1728,14 +1598,12 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
exit(101);
|
||||
sprintf(Buf, "%s:%s", ip, port);
|
||||
host = Buf;
|
||||
#ifdef NORMALIZE_HOST
|
||||
} else {
|
||||
char *colon = strchr(host, ':');
|
||||
if (*colon == 0) {
|
||||
if (!colon) {
|
||||
sprintf(Buf, "%s:%s", host, port);
|
||||
host = Buf;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
for (i = strlen(host); i >= 0; --i)
|
||||
if ((host[i] = tolower(host[i])) == '/')
|
||||
|
|
@ -1745,17 +1613,16 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
if (host[0] == '.')
|
||||
goto hostb0rken;
|
||||
// fprintf(stderr,"host %s\n",host);
|
||||
#ifdef KEEPALIVE
|
||||
if (keepalive > 0) {
|
||||
if ((rootdir = open(".", O_RDONLY)) < 0)
|
||||
keepalive = -1;
|
||||
}
|
||||
#endif
|
||||
if (chdir(host)) {
|
||||
#ifdef REDIRECT
|
||||
if (redirect) {
|
||||
char symlink[1024];
|
||||
int linklen;
|
||||
if ((linklen = readlink(host, symlink, sizeof symlink)) > 0) {
|
||||
if ((linklen =
|
||||
readlink(host, symlink, sizeof symlink)) > 0) {
|
||||
/*
|
||||
* it is a broken symlink. Do a redirection
|
||||
*/
|
||||
|
|
@ -1774,7 +1641,7 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
fflush(stdout);
|
||||
exit(0);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
if (chdir("default") && argc < 2) {
|
||||
badrequest(404, "Not Found",
|
||||
"<title>Not Found</title>This host is not served here.");
|
||||
|
|
@ -1837,9 +1704,9 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
url = nurl;
|
||||
nurl = url + i;
|
||||
}
|
||||
#ifdef CGI
|
||||
nurl -= 3;
|
||||
{
|
||||
|
||||
if (docgi) {
|
||||
char *tmp,
|
||||
*pathinfo;
|
||||
pathinfo = 0;
|
||||
|
|
@ -1876,13 +1743,10 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
*/
|
||||
--nurl;
|
||||
}
|
||||
#ifdef INDEX_CGI
|
||||
indexcgi:
|
||||
#endif
|
||||
start_cgi(0, pathinfo, envp); /* start a CGI */
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
{
|
||||
int fd;
|
||||
|
|
@ -1922,7 +1786,6 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
fputs("Server: " FNORD "\r\nContent-Type: ", stdout);
|
||||
fputs(mimetype, stdout);
|
||||
fputs("\r\n", stdout);
|
||||
#ifdef KEEPALIVE
|
||||
switch (keepalive) {
|
||||
case -1:
|
||||
fputs("Connection: close\r\n", stdout);
|
||||
|
|
@ -1931,11 +1794,11 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
fputs("Connection: Keep-Alive\r\n", stdout);
|
||||
break;
|
||||
}
|
||||
#endif
|
||||
if (encoding) {
|
||||
printf("Content-Encoding: %s\r\n", encoding);
|
||||
}
|
||||
printf("Content-Length: %llu\r\n", (unsigned long long)(rangeend - rangestart));
|
||||
printf("Content-Length: %llu\r\n",
|
||||
(unsigned long long) (rangeend - rangestart));
|
||||
printf("Last-Modified: ");
|
||||
{
|
||||
struct tm *x = gmtime(&st.st_mtime);
|
||||
|
|
@ -1952,9 +1815,9 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
if (rangestart || rangeend != st.st_size) {
|
||||
printf
|
||||
("Accept-Ranges: bytes\r\nContent-Range: bytes %llu-%llu/%llu\r\n",
|
||||
(unsigned long long)rangestart,
|
||||
(unsigned long long)rangeend - 1,
|
||||
(unsigned long long)st.st_size);
|
||||
(unsigned long long) rangestart,
|
||||
(unsigned long long) rangeend - 1,
|
||||
(unsigned long long) st.st_size);
|
||||
}
|
||||
fputs("\r\n", stdout);
|
||||
if (method == GET || method == POST) {
|
||||
|
|
@ -1966,7 +1829,6 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
case 1:
|
||||
return 1;
|
||||
}
|
||||
#ifdef KEEPALIVE
|
||||
#ifdef TCP_CORK
|
||||
if (corked) {
|
||||
int zero = 0;
|
||||
|
|
@ -1980,7 +1842,6 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
close(rootdir);
|
||||
goto handlenext;
|
||||
}
|
||||
#endif
|
||||
exit(0);
|
||||
error500:
|
||||
retcode = 500;
|
||||
|
|
@ -1991,16 +1852,14 @@ main(int argc, char *argv[], const char *const *envp)
|
|||
switch (retcode) {
|
||||
case 404:
|
||||
{
|
||||
#ifdef INDEX_CGI
|
||||
char *space = alloca(strlen(url) + 2);
|
||||
|
||||
if (handleindexcgi(url, origurl, space))
|
||||
goto indexcgi;
|
||||
#endif
|
||||
handleredirect(url, origurl);
|
||||
#ifdef DIR_LIST
|
||||
if (dirlist) {
|
||||
handledirlist(origurl);
|
||||
#endif
|
||||
}
|
||||
badrequest(404, "Not Found",
|
||||
"<title>Not Found</title>No such file or directory.");
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue