X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=report.c;h=5d9abb73a8332bb48d0fc13dc4afd54494869016;hb=2629c4511c68729d98acfd08637c1f00d3807f49;hp=5a33d71be4c43b31fe2f51d5ad7a2334ed69a012;hpb=d0c2c187633fa906eee672c21f46a2ac68148d15;p=~andy%2Ffetchmail diff --git a/report.c b/report.c index 5a33d71b..5d9abb73 100644 --- a/report.c +++ b/report.c @@ -1,38 +1,28 @@ -/* error.c -- error handler for noninteractive utilities - Copyright (C) 1990, 91, 92, 93, 94, 95, 96 Free Software Foundation, Inc. - -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -/* Written by David MacKenzie . - * Heavily modified by Dave Bodenstab and ESR. - * Bludgeoned into submission for SunOS 4.1.3 by - * Chris Cheyney . - * Now it works even when the return from vprintf is unreliable. +/** \file report.c report function for noninteractive utilities + * + * For license terms, see the file COPYING in this directory. + * + * This code is distantly descended from the error.c module written by + * David MacKenzie . It was redesigned and + * rewritten by Dave Bodenstab, then redesigned again by ESR, then + * bludgeoned into submission for SunOS 4.1.3 by Chris Cheyney + * . It works even when the return from + * vprintf(3) is unreliable. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif - #include #include +#include #if defined(HAVE_SYSLOG) #include #endif +#include "i18n.h" +#include "fetchmail.h" -#if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC || HAVE_STDARG_H +#if defined(HAVE_VPRINTF) || defined(HAVE_DOPRNT) || defined(_LIBC) || defined(HAVE_STDARG_H) # if HAVE_STDARG_H # include # define VA_START(args, lastarg) va_start(args, lastarg) @@ -45,37 +35,18 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ # define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8; #endif -#if STDC_HEADERS || _LIBC -# include -# include -#else -void exit (); -#endif - -#include "i18n.h" - -#include "fetchmail.h" #define MALLOC(n) xmalloc(n) #define REALLOC(n,s) xrealloc(n,s) -/* If NULL, error will flush stderr, then print on stderr the program - name, a colon and a space. Otherwise, error will call this - function without parameters instead. */ -void (*error_print_progname) ( -#if __STDC__ - 0 - void -#endif - ); - -/* Used by error_build() and error_complete() to accumulate partial messages. */ +/* Used by report_build() and report_complete() to accumulate partial messages. + */ static unsigned int partial_message_size = 0; static unsigned int partial_message_size_used = 0; static char *partial_message; -static unsigned use_stderr; -static unsigned int use_syslog; +static int partial_suppress_tag = 0; -/* This variable is incremented each time `error' is called. */ -unsigned int error_message_count; +static unsigned unbuffered; +static unsigned int use_syslog; #ifdef _LIBC /* In the GNU C library, there is a predefined variable for this. */ @@ -85,29 +56,22 @@ unsigned int error_message_count; #else -/* The calling program should define program_name and set it to the - name of the executing program. */ -extern char *program_name; - # if !HAVE_STRERROR && !defined(strerror) -char *strerror (errnum) - int errnum; +char *strerror (int errnum) { - extern char *sys_errlist[]; - extern int sys_nerr; + extern char *sys_errlist[]; + extern int sys_nerr; - if (errnum > 0 && errnum <= sys_nerr) - return sys_errlist[errnum]; - return _("Unknown system error"); + if (errnum > 0 && errnum <= sys_nerr) + return sys_errlist[errnum]; + return GT_("Unknown system error"); } # endif /* HAVE_STRERROR */ #endif /* _LIBC */ /* Print the program name and error message MESSAGE, which is a printf-style - format string with optional args. - If ERRNUM is nonzero, print its corresponding system error message. */ + format string with optional args. */ /* VARARGS */ - void #ifdef HAVE_STDARG_H report (FILE *errfp, const char *message, ...) @@ -118,117 +82,158 @@ report (FILE *errfp, message, va_alist) #endif { #ifdef VA_START - va_list args; + va_list args; #endif - /* If a partially built message exists, print it now so it's not lost. */ - if (partial_message_size_used != 0) + /* If a partially built message exists, print it now so it's not lost. */ + if (partial_message_size_used != 0) { - partial_message_size_used = 0; - report (errfp, 0, _("%s (log message incomplete)"), partial_message); + partial_message_size_used = 0; + report (errfp, GT_("%s (log message incomplete)\n"), partial_message); } #if defined(HAVE_SYSLOG) - if (use_syslog) + if (use_syslog) { - int priority; + int priority; #ifdef VA_START - VA_START (args, message); + VA_START (args, message); #endif - priority = (errfp == stderr) ? LOG_ERR : LOG_INFO; + priority = (errfp == stderr) ? LOG_ERR : LOG_INFO; #ifdef HAVE_VSYSLOG - vsyslog (priority, message, args); + vsyslog (priority, message, args); #else - { - char *a1 = va_arg(args, char *); - char *a2 = va_arg(args, char *); - char *a3 = va_arg(args, char *); - char *a4 = va_arg(args, char *); - char *a5 = va_arg(args, char *); - char *a6 = va_arg(args, char *); - char *a7 = va_arg(args, char *); - char *a8 = va_arg(args, char *); - syslog (priority, message, a1, a2, a3, a4, a5, a6, a7, a8); - } + { + char *a1 = va_arg(args, char *); + char *a2 = va_arg(args, char *); + char *a3 = va_arg(args, char *); + char *a4 = va_arg(args, char *); + char *a5 = va_arg(args, char *); + char *a6 = va_arg(args, char *); + char *a7 = va_arg(args, char *); + char *a8 = va_arg(args, char *); + syslog (priority, message, a1, a2, a3, a4, a5, a6, a7, a8); + } #endif #ifdef VA_START - va_end(args); + va_end(args); #endif } - else + else /* i. e. not using syslog */ #endif { - if (error_print_progname) - (*error_print_progname) (); - else + if ( *message == '\n' ) { - fflush (errfp); - if ( *message == '\n' ) - { - fputc( '\n', errfp ); - ++message; - } - fprintf (errfp, "%s: ", program_name); + fputc( '\n', errfp ); + ++message; } + if (!partial_suppress_tag) + fprintf (errfp, "%s: ", program_name); + partial_suppress_tag = 0; #ifdef VA_START - VA_START (args, message); -# if HAVE_VPRINTF || _LIBC - vfprintf (errfp, message, args); + VA_START (args, message); +# if defined(HAVE_VPRINTF) || defined(_LIBC) + vfprintf (errfp, message, args); # else - _doprnt (message, args, errfp); + _doprnt (message, args, errfp); # endif - va_end (args); + va_end (args); #else - fprintf (errfp, message, a1, a2, a3, a4, a5, a6, a7, a8); + fprintf (errfp, message, a1, a2, a3, a4, a5, a6, a7, a8); #endif - fflush (errfp); + fflush (errfp); } - ++error_message_count; } - -/* - * Calling report_init(1) causes error_build and error_complete to write - * to errfp without buffering. This is needed for the ticker dots to - * work correctly. + +/** + * Configure the report module. The output is set according to + * \a mode. */ -void report_init(int mode) +void report_init(int mode /** 0: regular output, 1: unbuffered output, -1: syslog */) { switch(mode) { case 0: /* errfp, buffered */ default: - use_stderr = FALSE; + unbuffered = FALSE; use_syslog = FALSE; break; case 1: /* errfp, unbuffered */ - use_stderr = TRUE; + unbuffered = TRUE; use_syslog = FALSE; break; #ifdef HAVE_SYSLOG case -1: /* syslogd */ - use_stderr = FALSE; + unbuffered = FALSE; use_syslog = TRUE; break; #endif /* HAVE_SYSLOG */ } } - -/* Build an error message by appending MESSAGE, which is a printf-style - format string with optional args, to the existing error message (which may - be empty.) The completed error message is finally printed (and reset to - empty) by calling error_complete(). + +/* Build an report message by appending MESSAGE, which is a printf-style + format string with optional args, to the existing report message (which may + be empty.) The completed report message is finally printed (and reset to + empty) by calling report_complete(). If an intervening call to report() occurs when a partially constructed message exists, then, in an attempt to keep the messages in their proper sequence, the partial message will be printed as-is (with a trailing newline) before report() prints its message. */ /* VARARGS */ +static void rep_ensuresize(void) { + /* Make an initial guess for the size of any single message fragment. */ + if (partial_message_size == 0) + { + partial_message_size_used = 0; + partial_message_size = 2048; + partial_message = (char *)MALLOC (partial_message_size); + } + else + if (partial_message_size - partial_message_size_used < 1024) + { + partial_message_size += 2048; + partial_message = (char *)REALLOC (partial_message, partial_message_size); + } +} + +#ifdef HAVE_STDARG_H +static void report_vbuild(const char *message, va_list args) +{ + int n; + + for ( ; ; ) + { + /* + * args has to be initialized before every call of vsnprintf(), + * because vsnprintf() invokes va_arg macro and thus args is + * undefined after the call. + */ + n = vsnprintf (partial_message + partial_message_size_used, partial_message_size - partial_message_size_used, + message, args); + + /* output error, f. i. EILSEQ */ + if (n < 0) break; + + if (n >= 0 + && (unsigned)n < partial_message_size - partial_message_size_used) + { + partial_message_size_used += n; + break; + } + + partial_message_size += 2048; + partial_message = (char *)REALLOC (partial_message, partial_message_size); + } +} +#endif + void #ifdef HAVE_STDARG_H report_build (FILE *errfp, const char *message, ...) @@ -239,96 +244,61 @@ report_build (FILE *errfp, message, va_alist) #endif { #ifdef VA_START - va_list args; - int n; + va_list args; +#else + int n; #endif - /* Make an initial guess for the size of any single message fragment. */ - if (partial_message_size == 0) - { - partial_message_size_used = 0; - partial_message_size = 2048; - partial_message = MALLOC (partial_message_size); - } - else - if (partial_message_size - partial_message_size_used < 1024) - { - partial_message_size += 2048; - partial_message = REALLOC (partial_message, partial_message_size); - } + rep_ensuresize(); #if defined(VA_START) - VA_START (args, message); -#if HAVE_VSNPRINTF || _LIBC - for ( ; ; ) - { - n = vsnprintf (partial_message + partial_message_size_used, - partial_message_size - partial_message_size_used, - message, args); - - if (n < partial_message_size - partial_message_size_used) - { - partial_message_size_used += n; - break; - } - - partial_message_size += 2048; - partial_message = REALLOC (partial_message, partial_message_size); - } + VA_START(args, message); + report_vbuild(message, args); + va_end(args); #else - vsprintf (partial_message + partial_message_size_used, message, args); - partial_message_size_used += strlen(partial_message+partial_message_size_used); - - /* Attempt to catch memory overwrites... */ - if (partial_message_size_used >= partial_message_size) + for ( ; ; ) { - partial_message_size_used = 0; - report (PS_UNDEFINED, 0, _("partial error message buffer overflow")); - } -#endif - va_end (args); -#else -#if HAVE_SNPRINTF - for ( ; ; ) - { - n = snprintf (partial_message + partial_message_size_used, - partial_message_size - partial_message_size_used, - message, a1, a2, a3, a4, a5, a6, a7, a8); + n = snprintf (partial_message + partial_message_size_used, + partial_message_size - partial_message_size_used, + message, a1, a2, a3, a4, a5, a6, a7, a8); + + /* output error, f. i. EILSEQ */ + if (n < 0) break; - if (n < partial_message_size - partial_message_size_used) + if (n >= 0 + && (unsigned)n < partial_message_size - partial_message_size_used) { - partial_message_size_used += n; - break; + partial_message_size_used += n; + break; } - partial_message_size += 2048; - partial_message = REALLOC (partial_message, partial_message_size); + partial_message_size += 2048; + partial_message = REALLOC (partial_message, partial_message_size); } -#else - sprintf (partial_message + partial_message_size_used, message, a1, a2, a3, a4, a5, a6, a7, a8); +#endif - /* Attempt to catch memory overwrites... */ - if ((partial_message_size_used = strlen (partial_message)) >= partial_message_size) + if (unbuffered && partial_message_size_used != 0) { - partial_message_size_used = 0; - report (PS_UNDEFINED, 0, _("partial error message buffer overflow")); + partial_message_size_used = 0; + fputs(partial_message, errfp); } -#endif -#endif +} - if (use_stderr && partial_message_size_used != 0) +void report_flush(FILE *errfp) +{ + if (partial_message_size_used != 0) { - partial_message_size_used = 0; - fputs(partial_message, errfp); + partial_message_size_used = 0; + report(errfp, "%s", partial_message); + partial_suppress_tag = 1; } } - -/* Complete an error message by appending MESSAGE, which is a printf-style - format string with optional args, to the existing error message (which may - be empty.) The completed error message is then printed (and reset to + +/* Complete a report message by appending MESSAGE, which is a printf-style + format string with optional args, to the existing report message (which may + be empty.) The completed report message is then printed (and reset to empty.) */ /* VARARGS */ - void #ifdef HAVE_STDARG_H report_complete (FILE *errfp, const char *message, ...) @@ -339,101 +309,36 @@ report_complete (FILE *errfp, message, va_alist) #endif { #ifdef VA_START - va_list args; - int n; + va_list args; #endif - /* Make an initial guess for the size of any single message fragment. */ - if (partial_message_size == 0) - { - partial_message_size_used = 0; - partial_message_size = 2048; - partial_message = MALLOC (partial_message_size); - } - else - if (partial_message_size - partial_message_size_used < 1024) - { - partial_message_size += 2048; - partial_message = REALLOC (partial_message, partial_message_size); - } + rep_ensuresize(); #if defined(VA_START) - VA_START (args, message); -#if HAVE_VSNPRINTF || _LIBC - for ( ; ; ) - { - n = vsnprintf (partial_message + partial_message_size_used, - partial_message_size - partial_message_size_used, - message, args); - - if (n < partial_message_size - partial_message_size_used) - { - partial_message_size_used += n; - break; - } - - partial_message_size += 2048; - partial_message = REALLOC (partial_message, partial_message_size); - } -#else - vsprintf (partial_message + partial_message_size_used, message, args); - partial_message_size_used += strlen(partial_message+partial_message_size_used); - - /* Attempt to catch memory overwrites... */ - if (partial_message_size_used >= partial_message_size) - { - partial_message_size_used = 0; - report (PS_UNDEFINED, 0, _("partial error message buffer overflow")); - } -#endif - va_end (args); -#else -#if HAVE_SNPRINTF - for ( ; ; ) - { - n = snprintf (partial_message + partial_message_size_used, - partial_message_size - partial_message_size_used, - message, a1, a2, a3, a4, a5, a6, a7, a8); - - if (n < partial_message_size - partial_message_size_used) - { - partial_message_size_used += n; - break; - } - - partial_message_size += 2048; - partial_message = REALLOC (partial_message, partial_message_size); - } + VA_START(args, message); + report_vbuild(message, args); + va_end(args); #else - sprintf (partial_message + partial_message_size_used, message, a1, a2, a3, a4, a5, a6, a7, a8); - - /* Attempt to catch memory overwrites... */ - if ((partial_message_size_used = strlen (partial_message)) >= partial_message_size) - { - partial_message_size_used = 0; - report (PS_UNDEFINED, 0, _("partial error message buffer overflow")); - } -#endif + report_build(errfp, message, a1, a2, a3, a4, a5, a6, a7, a8); #endif - /* Finally... print it. */ - partial_message_size_used = 0; + /* Finally... print it. */ + partial_message_size_used = 0; - if (use_stderr) + if (unbuffered) { - fputs(partial_message, errfp); - fflush (errfp); - - ++error_message_count; + fputs(partial_message, errfp); + fflush (errfp); } - else - report(errfp, "%s", partial_message); + else + report(errfp, "%s", partial_message); } - + /* Sometimes we want to have at most one error per line. This variable controls whether this mode is selected or not. */ -int error_one_per_line; +static int error_one_per_line; +/* If errnum is nonzero, print its corresponding system error message. */ void #ifdef HAVE_STDARG_H report_at_line (FILE *errfp, int errnum, const char *file_name, @@ -448,54 +353,48 @@ report_at_line (FILE *errfp, errnum, file_name, line_number, message, va_alist) #endif { #ifdef VA_START - va_list args; + va_list args; #endif - if (error_one_per_line) + if (error_one_per_line) { - static const char *old_file_name; - static unsigned int old_line_number; + static const char *old_file_name; + static unsigned int old_line_number; - if (old_line_number == line_number && - (file_name == old_file_name || !strcmp (old_file_name, file_name))) - /* Simply return and print nothing. */ - return; + if (old_line_number == line_number && + (file_name == old_file_name || !strcmp (old_file_name, file_name))) + /* Simply return and print nothing. */ + return; - old_file_name = file_name; - old_line_number = line_number; + old_file_name = file_name; + old_line_number = line_number; } - if (error_print_progname) - (*error_print_progname) (); - else + fflush (errfp); + if ( *message == '\n' ) { - fflush (errfp); - if ( *message == '\n' ) - { - fputc( '\n', errfp ); - ++message; - } - fprintf (errfp, "%s:", program_name); + fputc( '\n', errfp ); + ++message; } + fprintf (errfp, "%s:", program_name); - if (file_name != NULL) - fprintf (errfp, "%s:%d: ", file_name, line_number); + if (file_name != NULL) + fprintf (errfp, "%s:%u: ", file_name, line_number); #ifdef VA_START - VA_START (args, message); -# if HAVE_VPRINTF || _LIBC - vfprintf (errfp, message, args); + VA_START (args, message); +# if defined(HAVE_VPRINTF) || defined(_LIBC) + vfprintf (errfp, message, args); # else - _doprnt (message, args, errfp); + _doprnt (message, args, errfp); # endif - va_end (args); + va_end (args); #else - fprintf (errfp, message, a1, a2, a3, a4, a5, a6, a7, a8); + fprintf (errfp, message, a1, a2, a3, a4, a5, a6, a7, a8); #endif - ++error_message_count; - if (errnum) - fprintf (errfp, ": %s", strerror (errnum)); - putc ('\n', errfp); - fflush (errfp); + if (errnum) + fprintf (errfp, ": %s", strerror (errnum)); + putc ('\n', errfp); + fflush (errfp); }