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/* |
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* Boa, an http server |
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* Copyright (C) 1995 Paul Phillips <paulp@go2net.com> |
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* Some changes Copyright (C) 1996 Larry Doolittle <ldoolitt@boa.org> |
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* Some changes Copyright (C) 1999 Jon Nelson <jnelson@boa.org> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 1, or (at your option) |
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* any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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* |
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*/ |
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|
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/* $Id: log.c,v 1.36.2.3 2002/07/26 03:04:48 jnelson Exp $*/ |
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|
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#include "boa.h" |
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|
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FILE *access_log; |
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|
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char *error_log_name; |
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char *access_log_name; |
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char *cgi_log_name; |
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int cgi_log_fd; |
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|
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FILE *fopen_gen_fd(char *spec, const char *mode); |
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|
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FILE *fopen_gen_fd(char *spec, const char *mode) |
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{ |
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int fd; |
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if (!spec || *spec == '\0') |
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return NULL; |
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fd = open_gen_fd(spec); |
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if (fd == -1) |
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return NULL; |
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return fdopen(fd, mode); |
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} |
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|
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/* |
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* Name: open_logs |
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* |
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* Description: Opens access log, error log, and if specified, cgi log |
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* Ties stderr to error log, except during cgi execution, at which |
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* time cgi log is the stderr for cgis. |
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* |
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* Access log is line buffered, error log is not buffered. |
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* |
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*/ |
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|
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void open_logs(void) |
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{ |
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int error_log; |
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|
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/* if error_log_name is set, dup2 stderr to it */ |
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/* otherwise, leave stderr alone */ |
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/* we don't want to tie stderr to /dev/null */ |
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if (error_log_name) { |
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/* open the log file */ |
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if (!(error_log = open_gen_fd(error_log_name))) { |
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DIE("unable to open error log"); |
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} |
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|
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/* redirect stderr to error_log */ |
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if (dup2(error_log, STDERR_FILENO) == -1) { |
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DIE("unable to dup2 the error log"); |
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} |
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close(error_log); |
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} |
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|
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/* set the close-on-exec to true */ |
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if (fcntl(STDERR_FILENO, F_SETFD, 1) == -1) { |
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DIE("unable to fcntl the error log"); |
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} |
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|
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if (access_log_name) { |
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/* Used the "a" flag with fopen, but fopen_gen_fd builds that in |
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* implicitly when used as a file, and "a" is incompatible with |
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* pipes and network sockets. */ |
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if (!(access_log = fopen_gen_fd(access_log_name, "w"))) { |
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int errno_save = errno; |
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fprintf(stderr, "Cannot open %s for logging: ", |
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access_log_name); |
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errno = errno_save; |
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perror("logfile open"); |
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exit(errno); |
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} |
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/* line buffer the access log */ |
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#ifdef SETVBUF_REVERSED |
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setvbuf(access_log, _IOLBF, (char *) NULL, 0); |
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#else |
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setvbuf(access_log, (char *) NULL, _IOLBF, 0); |
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#endif |
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} else |
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access_log = NULL; |
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|
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if (cgi_log_name) { |
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cgi_log_fd = open_gen_fd(cgi_log_name); |
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if (cgi_log_fd == -1) { |
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WARN("open cgi_log"); |
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free(cgi_log_name); |
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cgi_log_name = NULL; |
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cgi_log_fd = 0; |
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} else { |
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if (fcntl(cgi_log_fd, F_SETFD, 1) == -1) { |
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WARN("unable to set close-on-exec flag for cgi_log"); |
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close(cgi_log_fd); |
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cgi_log_fd = 0; |
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free(cgi_log_name); |
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cgi_log_name = NULL; |
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} |
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} |
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} |
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} |
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|
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/* |
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* Name: close_access_log |
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* |
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* Description: closes access_log file |
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*/ |
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void close_access_log(void) |
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{ |
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if (access_log) |
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fclose(access_log); |
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} |
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|
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/* |
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* Name: log_access |
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* |
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* Description: Writes log data to access_log. |
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*/ |
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|
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void log_access(request * req) |
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{ |
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if (access_log) { |
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if (virtualhost) |
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fprintf(access_log, "%s ", req->local_ip_addr); |
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fprintf(access_log, "%s - - %s\"%s\" %d %ld \"%s\" \"%s\"\n", |
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req->remote_ip_addr, |
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get_commonlog_time(), |
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req->logline, |
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req->response_status, |
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req->filepos, |
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(req->header_referer ? req->header_referer : "-"), |
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(req->header_user_agent ? req->header_user_agent : "-")); |
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|
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} |
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} |
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|
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/* |
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* Name: log_error_doc |
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* |
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* Description: Logs the current time and transaction identification |
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* to the stderr (the error log): |
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* should always be followed by an fprintf to stderr |
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* |
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* This function used to be implemented with a big fprintf, but not |
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* all fprintf's are reliable in the face of null string pointers |
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* (SunOS, in particular). As long as I had to add the checks for |
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* null pointers, I changed from fprintf to fputs. |
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* |
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* Example output: |
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[08/Nov/1997:01:05:03 -0600] request from 192.228.331.232 "GET /~joeblow/dir/ HTTP/1.0" ("/usr/user1/joeblow/public_html/dir/"): write: Broken pipe |
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*/ |
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|
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void log_error_doc(request * req) |
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{ |
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int errno_save = errno; |
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|
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fprintf(stderr, "%srequest from %s \"%s\" (\"%s\"): ", |
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get_commonlog_time(), |
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req->remote_ip_addr, |
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(req->logline != NULL ? |
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req->logline : "(null)"), |
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(req->pathname != NULL ? req->pathname : "(null)")); |
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|
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errno = errno_save; |
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} |
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|
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/* |
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* Name: boa_perror |
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* |
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* Description: logs an error to user and error file both |
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* |
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*/ |
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void boa_perror(request * req, char *message) |
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{ |
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log_error_doc(req); |
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perror(message); /* don't need to save errno because log_error_doc does */ |
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send_r_error(req); |
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} |
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|
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/* |
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* Name: log_error_time |
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* |
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* Description: Logs the current time to the stderr (the error log): |
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* should always be followed by an fprintf to stderr |
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*/ |
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|
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void log_error_time() |
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{ |
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int errno_save = errno; |
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fputs(get_commonlog_time(), stderr); |
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errno = errno_save; |
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} |
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|
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/* |
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* Name: log_error_mesg |
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* |
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* Description: performs a log_error_time, writes the file and lineno |
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* to stderr (saving errno), and then a perror with message |
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* |
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*/ |
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|
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void log_error_mesg(char *file, int line, char *mesg) |
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{ |
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int errno_save = errno; |
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fprintf(stderr, "%s%s:%d - ", get_commonlog_time(), file, line); |
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errno = errno_save; |
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perror(mesg); |
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errno = errno_save; |
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} |
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