diff options
Diffstat (limited to 'rubbos/app/httpd-2.0.64/server/util_script.c')
| -rw-r--r-- | rubbos/app/httpd-2.0.64/server/util_script.c | 717 |
1 files changed, 0 insertions, 717 deletions
diff --git a/rubbos/app/httpd-2.0.64/server/util_script.c b/rubbos/app/httpd-2.0.64/server/util_script.c deleted file mode 100644 index ad8d5745..00000000 --- a/rubbos/app/httpd-2.0.64/server/util_script.c +++ /dev/null @@ -1,717 +0,0 @@ -/* Licensed to the Apache Software Foundation (ASF) under one or more - * contributor license agreements. See the NOTICE file distributed with - * this work for additional information regarding copyright ownership. - * The ASF licenses this file to You under the Apache License, Version 2.0 - * (the "License"); you may not use this file except in compliance with - * the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "apr.h" -#include "apr_lib.h" -#include "apr_strings.h" - -#define APR_WANT_STRFUNC -#include "apr_want.h" - -#if APR_HAVE_STDLIB_H -#include <stdlib.h> -#endif - -#define CORE_PRIVATE -#include "ap_config.h" -#include "httpd.h" -#include "http_config.h" -#include "http_main.h" -#include "http_log.h" -#include "http_core.h" -#include "http_protocol.h" -#include "http_request.h" /* for sub_req_lookup_uri() */ -#include "util_script.h" -#include "apr_date.h" /* For apr_date_parse_http() */ -#include "util_ebcdic.h" - -#ifdef OS2 -#define INCL_DOS -#include <os2.h> -#endif - -/* - * Various utility functions which are common to a whole lot of - * script-type extensions mechanisms, and might as well be gathered - * in one place (if only to avoid creating inter-module dependancies - * where there don't have to be). - */ - -#define MALFORMED_MESSAGE "malformed header from script. Bad header=" -#define MALFORMED_HEADER_LENGTH_TO_SHOW 30 - -static char *http2env(apr_pool_t *a, const char *w) -{ - char *res = (char *)apr_palloc(a, sizeof("HTTP_") + strlen(w)); - char *cp = res; - char c; - - *cp++ = 'H'; - *cp++ = 'T'; - *cp++ = 'T'; - *cp++ = 'P'; - *cp++ = '_'; - - while ((c = *w++) != 0) { - if (!apr_isalnum(c)) { - *cp++ = '_'; - } - else { - *cp++ = apr_toupper(c); - } - } - *cp = 0; - - return res; -} - -AP_DECLARE(char **) ap_create_environment(apr_pool_t *p, apr_table_t *t) -{ - const apr_array_header_t *env_arr = apr_table_elts(t); - const apr_table_entry_t *elts = (const apr_table_entry_t *) env_arr->elts; - char **env = (char **) apr_palloc(p, (env_arr->nelts + 2) * sizeof(char *)); - int i, j; - char *tz; - char *whack; - - j = 0; - if (!apr_table_get(t, "TZ")) { - tz = getenv("TZ"); - if (tz != NULL) { - env[j++] = apr_pstrcat(p, "TZ=", tz, NULL); - } - } - for (i = 0; i < env_arr->nelts; ++i) { - if (!elts[i].key) { - continue; - } - env[j] = apr_pstrcat(p, elts[i].key, "=", elts[i].val, NULL); - whack = env[j]; - if (apr_isdigit(*whack)) { - *whack++ = '_'; - } - while (*whack != '=') { - if (!apr_isalnum(*whack) && *whack != '_') { - *whack = '_'; - } - ++whack; - } - ++j; - } - - env[j] = NULL; - return env; -} - -AP_DECLARE(void) ap_add_common_vars(request_rec *r) -{ - apr_table_t *e; - server_rec *s = r->server; - conn_rec *c = r->connection; - const char *rem_logname; - char *env_path; -#if defined(WIN32) || defined(OS2) || defined(BEOS) - char *env_temp; -#endif - const char *host; - const apr_array_header_t *hdrs_arr = apr_table_elts(r->headers_in); - const apr_table_entry_t *hdrs = (const apr_table_entry_t *) hdrs_arr->elts; - int i; - apr_port_t rport; - - /* use a temporary apr_table_t which we'll overlap onto - * r->subprocess_env later - * (exception: if r->subprocess_env is empty at the start, - * write directly into it) - */ - if (apr_is_empty_table(r->subprocess_env)) { - e = r->subprocess_env; - } - else { - e = apr_table_make(r->pool, 25 + hdrs_arr->nelts); - } - - /* First, add environment vars from headers... this is as per - * CGI specs, though other sorts of scripting interfaces see - * the same vars... - */ - - for (i = 0; i < hdrs_arr->nelts; ++i) { - if (!hdrs[i].key) { - continue; - } - - /* A few headers are special cased --- Authorization to prevent - * rogue scripts from capturing passwords; content-type and -length - * for no particular reason. - */ - - if (!strcasecmp(hdrs[i].key, "Content-type")) { - apr_table_addn(e, "CONTENT_TYPE", hdrs[i].val); - } - else if (!strcasecmp(hdrs[i].key, "Content-length")) { - apr_table_addn(e, "CONTENT_LENGTH", hdrs[i].val); - } - /* - * You really don't want to disable this check, since it leaves you - * wide open to CGIs stealing passwords and people viewing them - * in the environment with "ps -e". But, if you must... - */ -#ifndef SECURITY_HOLE_PASS_AUTHORIZATION - else if (!strcasecmp(hdrs[i].key, "Authorization") - || !strcasecmp(hdrs[i].key, "Proxy-Authorization")) { - continue; - } -#endif - else { - apr_table_addn(e, http2env(r->pool, hdrs[i].key), hdrs[i].val); - } - } - - if (!(env_path = getenv("PATH"))) { - env_path = DEFAULT_PATH; - } - apr_table_addn(e, "PATH", apr_pstrdup(r->pool, env_path)); - -#ifdef WIN32 - if (env_temp = getenv("SystemRoot")) { - apr_table_addn(e, "SystemRoot", env_temp); - } - if (env_temp = getenv("COMSPEC")) { - apr_table_addn(e, "COMSPEC", env_temp); - } - if (env_temp = getenv("PATHEXT")) { - apr_table_addn(e, "PATHEXT", env_temp); - } - if (env_temp = getenv("WINDIR")) { - apr_table_addn(e, "WINDIR", env_temp); - } -#endif - -#ifdef OS2 - if ((env_temp = getenv("COMSPEC")) != NULL) { - apr_table_addn(e, "COMSPEC", env_temp); - } - if ((env_temp = getenv("ETC")) != NULL) { - apr_table_addn(e, "ETC", env_temp); - } - if ((env_temp = getenv("DPATH")) != NULL) { - apr_table_addn(e, "DPATH", env_temp); - } - if ((env_temp = getenv("PERLLIB_PREFIX")) != NULL) { - apr_table_addn(e, "PERLLIB_PREFIX", env_temp); - } -#endif - -#ifdef BEOS - if ((env_temp = getenv("LIBRARY_PATH")) != NULL) { - apr_table_addn(e, "LIBRARY_PATH", env_temp); - } -#endif - - apr_table_addn(e, "SERVER_SIGNATURE", ap_psignature("", r)); - apr_table_addn(e, "SERVER_SOFTWARE", ap_get_server_version()); - apr_table_addn(e, "SERVER_NAME", - ap_escape_html(r->pool, ap_get_server_name(r))); - apr_table_addn(e, "SERVER_ADDR", r->connection->local_ip); /* Apache */ - apr_table_addn(e, "SERVER_PORT", - apr_psprintf(r->pool, "%u", ap_get_server_port(r))); - host = ap_get_remote_host(c, r->per_dir_config, REMOTE_HOST, NULL); - if (host) { - apr_table_addn(e, "REMOTE_HOST", host); - } - apr_table_addn(e, "REMOTE_ADDR", c->remote_ip); - apr_table_addn(e, "DOCUMENT_ROOT", ap_document_root(r)); /* Apache */ - apr_table_addn(e, "SERVER_ADMIN", s->server_admin); /* Apache */ - apr_table_addn(e, "SCRIPT_FILENAME", r->filename); /* Apache */ - - apr_sockaddr_port_get(&rport, c->remote_addr); - apr_table_addn(e, "REMOTE_PORT", apr_itoa(r->pool, rport)); - - if (r->user) { - apr_table_addn(e, "REMOTE_USER", r->user); - } - else if (r->prev) { - request_rec *back = r->prev; - - while (back) { - if (back->user) { - apr_table_addn(e, "REDIRECT_REMOTE_USER", back->user); - break; - } - back = back->prev; - } - } - if (r->ap_auth_type) { - apr_table_addn(e, "AUTH_TYPE", r->ap_auth_type); - } - rem_logname = ap_get_remote_logname(r); - if (rem_logname) { - apr_table_addn(e, "REMOTE_IDENT", apr_pstrdup(r->pool, rem_logname)); - } - - /* Apache custom error responses. If we have redirected set two new vars */ - - if (r->prev) { - if (r->prev->args) { - apr_table_addn(e, "REDIRECT_QUERY_STRING", r->prev->args); - } - if (r->prev->uri) { - apr_table_addn(e, "REDIRECT_URL", r->prev->uri); - } - } - - if (e != r->subprocess_env) { - apr_table_overlap(r->subprocess_env, e, APR_OVERLAP_TABLES_SET); - } -} - -/* This "cute" little function comes about because the path info on - * filenames and URLs aren't always the same. So we take the two, - * and find as much of the two that match as possible. - */ - -AP_DECLARE(int) ap_find_path_info(const char *uri, const char *path_info) -{ - int lu = strlen(uri); - int lp = strlen(path_info); - - while (lu-- && lp-- && uri[lu] == path_info[lp]); - - if (lu == -1) { - lu = 0; - } - - while (uri[lu] != '\0' && uri[lu] != '/') { - lu++; - } - return lu; -} - -/* Obtain the Request-URI from the original request-line, returning - * a new string from the request pool containing the URI or "". - */ -static char *original_uri(request_rec *r) -{ - char *first, *last; - - if (r->the_request == NULL) { - return (char *) apr_pcalloc(r->pool, 1); - } - - first = r->the_request; /* use the request-line */ - - while (*first && !apr_isspace(*first)) { - ++first; /* skip over the method */ - } - while (apr_isspace(*first)) { - ++first; /* and the space(s) */ - } - - last = first; - while (*last && !apr_isspace(*last)) { - ++last; /* end at next whitespace */ - } - - return apr_pstrmemdup(r->pool, first, last - first); -} - -AP_DECLARE(void) ap_add_cgi_vars(request_rec *r) -{ - apr_table_t *e = r->subprocess_env; - - apr_table_setn(e, "GATEWAY_INTERFACE", "CGI/1.1"); - apr_table_setn(e, "SERVER_PROTOCOL", r->protocol); - apr_table_setn(e, "REQUEST_METHOD", r->method); - apr_table_setn(e, "QUERY_STRING", r->args ? r->args : ""); - apr_table_setn(e, "REQUEST_URI", original_uri(r)); - - /* Note that the code below special-cases scripts run from includes, - * because it "knows" that the sub_request has been hacked to have the - * args and path_info of the original request, and not any that may have - * come with the script URI in the include command. Ugh. - */ - - if (!strcmp(r->protocol, "INCLUDED")) { - apr_table_setn(e, "SCRIPT_NAME", r->uri); - if (r->path_info && *r->path_info) { - apr_table_setn(e, "PATH_INFO", r->path_info); - } - } - else if (!r->path_info || !*r->path_info) { - apr_table_setn(e, "SCRIPT_NAME", r->uri); - } - else { - int path_info_start = ap_find_path_info(r->uri, r->path_info); - - apr_table_setn(e, "SCRIPT_NAME", - apr_pstrndup(r->pool, r->uri, path_info_start)); - - apr_table_setn(e, "PATH_INFO", r->path_info); - } - - if (r->path_info && r->path_info[0]) { - /* - * To get PATH_TRANSLATED, treat PATH_INFO as a URI path. - * Need to re-escape it for this, since the entire URI was - * un-escaped before we determined where the PATH_INFO began. - */ - request_rec *pa_req; - - pa_req = ap_sub_req_lookup_uri(ap_escape_uri(r->pool, r->path_info), r, - NULL); - - if (pa_req->filename) { - char *pt = apr_pstrcat(r->pool, pa_req->filename, pa_req->path_info, - NULL); -#ifdef WIN32 - /* We need to make this a real Windows path name */ - apr_filepath_merge(&pt, "", pt, APR_FILEPATH_NATIVE, r->pool); -#endif - apr_table_setn(e, "PATH_TRANSLATED", pt); - } - ap_destroy_sub_req(pa_req); - } -} - - -static int set_cookie_doo_doo(void *v, const char *key, const char *val) -{ - apr_table_addn(v, key, val); - return 1; -} - -#define HTTP_UNSET (-HTTP_OK) - -AP_DECLARE(int) ap_scan_script_header_err_core(request_rec *r, char *buffer, - int (*getsfunc) (char *, int, void *), - void *getsfunc_data) -{ - char x[MAX_STRING_LEN]; - char *w, *l; - int p; - int cgi_status = HTTP_UNSET; - apr_table_t *merge; - apr_table_t *cookie_table; - - if (buffer) { - *buffer = '\0'; - } - w = buffer ? buffer : x; - - /* temporary place to hold headers to merge in later */ - merge = apr_table_make(r->pool, 10); - - /* The HTTP specification says that it is legal to merge duplicate - * headers into one. Some browsers that support Cookies don't like - * merged headers and prefer that each Set-Cookie header is sent - * separately. Lets humour those browsers by not merging. - * Oh what a pain it is. - */ - cookie_table = apr_table_make(r->pool, 2); - apr_table_do(set_cookie_doo_doo, cookie_table, r->err_headers_out, "Set-Cookie", NULL); - - while (1) { - - if ((*getsfunc) (w, MAX_STRING_LEN - 1, getsfunc_data) == 0) { - ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_TOCLIENT, 0, r, - "Premature end of script headers: %s", - apr_filename_of_pathname(r->filename)); - return HTTP_INTERNAL_SERVER_ERROR; - } - - /* Delete terminal (CR?)LF */ - - p = strlen(w); - /* Indeed, the host's '\n': - '\012' for UNIX; '\015' for MacOS; '\025' for OS/390 - -- whatever the script generates. - */ - if (p > 0 && w[p - 1] == '\n') { - if (p > 1 && w[p - 2] == CR) { - w[p - 2] = '\0'; - } - else { - w[p - 1] = '\0'; - } - } - - /* - * If we've finished reading the headers, check to make sure any - * HTTP/1.1 conditions are met. If so, we're done; normal processing - * will handle the script's output. If not, just return the error. - * The appropriate thing to do would be to send the script process a - * SIGPIPE to let it know we're ignoring it, close the channel to the - * script process, and *then* return the failed-to-meet-condition - * error. Otherwise we'd be waiting for the script to finish - * blithering before telling the client the output was no good. - * However, we don't have the information to do that, so we have to - * leave it to an upper layer. - */ - if (w[0] == '\0') { - int cond_status = OK; - - /* PR#38070: This fails because it gets confused when a - * CGI Status header overrides ap_meets_conditions. - * - * We can fix that by dropping ap_meets_conditions when - * Status has been set. Since this is the only place - * cgi_status gets used, let's test it explicitly. - * - * The alternative would be to ignore CGI Status when - * ap_meets_conditions returns anything interesting. - * That would be safer wrt HTTP, but would break CGI. - */ - if ((cgi_status == HTTP_UNSET) && (r->method_number == M_GET)) { - cond_status = ap_meets_conditions(r); - } - apr_table_overlap(r->err_headers_out, merge, - APR_OVERLAP_TABLES_MERGE); - if (!apr_is_empty_table(cookie_table)) { - /* the cookies have already been copied to the cookie_table */ - apr_table_unset(r->err_headers_out, "Set-Cookie"); - r->err_headers_out = apr_table_overlay(r->pool, - r->err_headers_out, cookie_table); - } - return cond_status; - } - - /* if we see a bogus header don't ignore it. Shout and scream */ - -#if APR_CHARSET_EBCDIC - /* Chances are that we received an ASCII header text instead of - * the expected EBCDIC header lines. Try to auto-detect: - */ - if (!(l = strchr(w, ':'))) { - int maybeASCII = 0, maybeEBCDIC = 0; - unsigned char *cp, native; - apr_size_t inbytes_left, outbytes_left; - - for (cp = w; *cp != '\0'; ++cp) { - native = apr_xlate_conv_byte(ap_hdrs_from_ascii, *cp); - if (apr_isprint(*cp) && !apr_isprint(native)) - ++maybeEBCDIC; - if (!apr_isprint(*cp) && apr_isprint(native)) - ++maybeASCII; - } - if (maybeASCII > maybeEBCDIC) { - ap_log_error(APLOG_MARK, APLOG_ERR, 0, r->server, - "CGI Interface Error: Script headers apparently ASCII: (CGI = %s)", - r->filename); - inbytes_left = outbytes_left = cp - w; - apr_xlate_conv_buffer(ap_hdrs_from_ascii, - w, &inbytes_left, w, &outbytes_left); - } - } -#endif /*APR_CHARSET_EBCDIC*/ - if (!(l = strchr(w, ':'))) { - char malformed[(sizeof MALFORMED_MESSAGE) + 1 - + MALFORMED_HEADER_LENGTH_TO_SHOW]; - - strcpy(malformed, MALFORMED_MESSAGE); - strncat(malformed, w, MALFORMED_HEADER_LENGTH_TO_SHOW); - - if (!buffer) { - /* Soak up all the script output - may save an outright kill */ - while ((*getsfunc) (w, MAX_STRING_LEN - 1, getsfunc_data)) { - continue; - } - } - - ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_TOCLIENT, 0, r, - "%s: %s", malformed, - apr_filename_of_pathname(r->filename)); - return HTTP_INTERNAL_SERVER_ERROR; - } - - *l++ = '\0'; - while (*l && apr_isspace(*l)) { - ++l; - } - - if (!strcasecmp(w, "Content-type")) { - char *tmp; - - /* Nuke trailing whitespace */ - - char *endp = l + strlen(l) - 1; - while (endp > l && apr_isspace(*endp)) { - *endp-- = '\0'; - } - - tmp = apr_pstrdup(r->pool, l); - ap_content_type_tolower(tmp); - ap_set_content_type(r, tmp); - } - /* - * If the script returned a specific status, that's what - * we'll use - otherwise we assume 200 OK. - */ - else if (!strcasecmp(w, "Status")) { - r->status = cgi_status = atoi(l); - r->status_line = apr_pstrdup(r->pool, l); - } - else if (!strcasecmp(w, "Location")) { - apr_table_set(r->headers_out, w, l); - } - else if (!strcasecmp(w, "Content-Length")) { - apr_table_set(r->headers_out, w, l); - } - else if (!strcasecmp(w, "Content-Range")) { - apr_table_set(r->headers_out, w, l); - } - else if (!strcasecmp(w, "Transfer-Encoding")) { - apr_table_set(r->headers_out, w, l); - } - /* - * If the script gave us a Last-Modified header, we can't just - * pass it on blindly because of restrictions on future values. - */ - else if (!strcasecmp(w, "Last-Modified")) { - ap_update_mtime(r, apr_date_parse_http(l)); - ap_set_last_modified(r); - } - else if (!strcasecmp(w, "Set-Cookie")) { - apr_table_add(cookie_table, w, l); - } - else { - apr_table_add(merge, w, l); - } - } - - return OK; -} - -static int getsfunc_FILE(char *buf, int len, void *f) -{ - return apr_file_gets(buf, len, (apr_file_t *) f) == APR_SUCCESS; -} - -AP_DECLARE(int) ap_scan_script_header_err(request_rec *r, apr_file_t *f, - char *buffer) -{ - return ap_scan_script_header_err_core(r, buffer, getsfunc_FILE, f); -} - -static int getsfunc_BRIGADE(char *buf, int len, void *arg) -{ - apr_bucket_brigade *bb = (apr_bucket_brigade *)arg; - const char *dst_end = buf + len - 1; /* leave room for terminating null */ - char *dst = buf; - apr_bucket *e = APR_BRIGADE_FIRST(bb); - apr_status_t rv; - int done = 0; - - while ((dst < dst_end) && !done && !APR_BUCKET_IS_EOS(e)) { - const char *bucket_data; - apr_size_t bucket_data_len; - const char *src; - const char *src_end; - apr_bucket * next; - - rv = apr_bucket_read(e, &bucket_data, &bucket_data_len, - APR_BLOCK_READ); - if (!APR_STATUS_IS_SUCCESS(rv) || (bucket_data_len == 0)) { - return 0; - } - src = bucket_data; - src_end = bucket_data + bucket_data_len; - while ((src < src_end) && (dst < dst_end) && !done) { - if (*src == '\n') { - done = 1; - } - else if (*src != '\r') { - *dst++ = *src; - } - src++; - } - - if (src < src_end) { - apr_bucket_split(e, src - bucket_data); - } - next = APR_BUCKET_NEXT(e); - APR_BUCKET_REMOVE(e); - apr_bucket_destroy(e); - e = next; - } - *dst = 0; - return 1; -} - -AP_DECLARE(int) ap_scan_script_header_err_brigade(request_rec *r, - apr_bucket_brigade *bb, - char *buffer) -{ - return ap_scan_script_header_err_core(r, buffer, getsfunc_BRIGADE, bb); -} - -struct vastrs { - va_list args; - int arg; - const char *curpos; -}; - -static int getsfunc_STRING(char *w, int len, void *pvastrs) -{ - struct vastrs *strs = (struct vastrs*) pvastrs; - const char *p; - int t; - - if (!strs->curpos || !*strs->curpos) - return 0; - p = ap_strchr_c(strs->curpos, '\n'); - if (p) - ++p; - else - p = ap_strchr_c(strs->curpos, '\0'); - t = p - strs->curpos; - if (t > len) - t = len; - strncpy (w, strs->curpos, t); - w[t] = '\0'; - if (!strs->curpos[t]) { - ++strs->arg; - strs->curpos = va_arg(strs->args, const char *); - } - else - strs->curpos += t; - return t; -} - -/* ap_scan_script_header_err_strs() accepts additional const char* args... - * each is treated as one or more header lines, and the first non-header - * character is returned to **arg, **data. (The first optional arg is - * counted as 0.) - */ -AP_DECLARE_NONSTD(int) ap_scan_script_header_err_strs(request_rec *r, - char *buffer, - const char **termch, - int *termarg, ...) -{ - struct vastrs strs; - int res; - - va_start(strs.args, termarg); - strs.arg = 0; - strs.curpos = va_arg(strs.args, char*); - res = ap_scan_script_header_err_core(r, buffer, getsfunc_STRING, (void *) &strs); - if (termch) - *termch = strs.curpos; - if (termarg) - *termarg = strs.arg; - va_end(strs.args); - return res; -} |