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/* ==================================================================== * Copyright (c) 1995-1997 The Apache Group. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the Apache Group * for use in the Apache HTTP server project (http://www.apache.org/)." * * 4. The names "Apache Server" and "Apache Group" must not be used to * endorse or promote products derived from this software without * prior written permission. * * 5. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the Apache Group * for use in the Apache HTTP server project (http://www.apache.org/)." * * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE APACHE GROUP OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Group and was originally based * on public domain software written at the National Center for * Supercomputing Applications, University of Illinois, Urbana-Champaign. * For more information on the Apache Group and the Apache HTTP server * project, please see <http://www.apache.org/>. * */ #include "httpd.h" #include "http_config.h" module agent_log_module; static int xfer_flags = ( O_WRONLY | O_APPEND | O_CREAT ); #ifdef __EMX__ /* OS/2 dosen't support users and groups */ static mode_t xfer_mode = ( S_IREAD | S_IWRITE ); #else static mode_t xfer_mode = ( S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ); #endif typedef struct { char *fname; int agent_fd; } agent_log_state; void *make_agent_log_state (pool *p, server_rec *s) { agent_log_state *cls = (agent_log_state *)palloc (p, sizeof (agent_log_state)); cls->fname = ""; cls->agent_fd = -1; return (void *)cls; } const char *set_agent_log (cmd_parms *parms, void *dummy, char *arg) { agent_log_state *cls = get_module_config (parms->server->module_config, &agent_log_module); cls->fname = arg; return NULL; } command_rec agent_log_cmds[] = { { "AgentLog", set_agent_log, NULL, RSRC_CONF, TAKE1, "the filename of the agent log" }, { NULL } }; static int agent_log_child (void *cmd) { /* Child process code for 'AgentLog "|..."'; * may want a common framework for this, since I expect it will * be common for other foo-loggers to want this sort of thing... */ int child_pid = 1; cleanup_for_exec(); signal (SIGHUP, SIG_IGN); #if defined(WIN32) child_pid = spawnl (SHELL_PATH, SHELL_PATH, "/c", (char *)cmd, NULL); return(child_pid); #elif defined(__EMX__) /* For OS/2 we need to use a '/' */ execl (SHELL_PATH, SHELL_PATH, "/c", (char *)cmd, NULL); #else execl (SHELL_PATH, SHELL_PATH, "-c", (char *)cmd, NULL); #endif perror ("exec"); fprintf (stderr, "Exec of shell for logging failed!!!\n"); return(child_pid); } void open_agent_log (server_rec *s, pool *p) { agent_log_state *cls = get_module_config (s->module_config, &agent_log_module); char *fname = server_root_relative (p, cls->fname); if (cls->agent_fd > 0) return; /* virtual log shared w/main server */ if (*cls->fname == '|') { FILE *dummy; if (!spawn_child (p, agent_log_child, (void *)(cls->fname+1), kill_after_timeout, &dummy, NULL)) { perror ("spawn_child"); fprintf (stderr, "Couldn't fork child for AgentLog process\n"); exit (1); } cls->agent_fd = fileno (dummy); } else if(*cls->fname != '\0') { if((cls->agent_fd = popenf(p, fname, xfer_flags, xfer_mode)) < 0) { perror("open"); fprintf(stderr,"httpd: could not open agent log file %s.\n", fname); exit(1); } } } void init_agent_log (server_rec *s, pool *p) { for (; s; s = s->next) open_agent_log (s, p); } int agent_log_transaction(request_rec *orig) { agent_log_state *cls = get_module_config (orig->server->module_config, &agent_log_module); char str[HUGE_STRING_LEN]; char *agent; request_rec *r; if(cls->agent_fd <0) return OK; for (r = orig; r->next; r = r->next) continue; if (*cls->fname == '\0') /* Don't log agent */ return DECLINED; agent = table_get(orig->headers_in, "User-Agent"); if(agent != NULL) { ap_snprintf(str, sizeof(str), "%s\n", agent); write(cls->agent_fd, str, strlen(str)); } return OK; } module agent_log_module = { STANDARD_MODULE_STUFF, init_agent_log, /* initializer */ NULL, /* create per-dir config */ NULL, /* merge per-dir config */ make_agent_log_state, /* server config */ NULL, /* merge server config */ agent_log_cmds, /* command table */ NULL, /* handlers */ NULL, /* filename translation */ NULL, /* check_user_id */ NULL, /* check auth */ NULL, /* check access */ NULL, /* type_checker */ NULL, /* fixups */ agent_log_transaction, /* logger */ NULL, /* header parser */ NULL /* child_init */ };
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