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Diffstat (limited to 'branches/gpgme-1-0-branch/assuan/assuan-util.c')
| -rw-r--r-- | branches/gpgme-1-0-branch/assuan/assuan-util.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/branches/gpgme-1-0-branch/assuan/assuan-util.c b/branches/gpgme-1-0-branch/assuan/assuan-util.c new file mode 100644 index 00000000..fc0beedb --- /dev/null +++ b/branches/gpgme-1-0-branch/assuan/assuan-util.c @@ -0,0 +1,219 @@ +/* assuan-util.c - Utility functions for Assuan + * Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc. + * + * This file is part of Assuan. + * + * Assuan is free software; you can redistribute it and/or modify it + * under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 of + * the License, or (at your option) any later version. + * + * Assuan 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser 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 + */ + +#include <config.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <ctype.h> + +#include "assuan-defs.h" + +static void *(*alloc_func)(size_t n) = malloc; +static void *(*realloc_func)(void *p, size_t n) = realloc; +static void (*free_func)(void*) = free; + +void +assuan_set_malloc_hooks ( void *(*new_alloc_func)(size_t n), + void *(*new_realloc_func)(void *p, size_t n), + void (*new_free_func)(void*) ) +{ + alloc_func = new_alloc_func; + realloc_func = new_realloc_func; + free_func = new_free_func; +} + +void * +_assuan_malloc (size_t n) +{ + return alloc_func (n); +} + +void * +_assuan_realloc (void *a, size_t n) +{ + return realloc_func (a, n); +} + +void * +_assuan_calloc (size_t n, size_t m) +{ + void *p = _assuan_malloc (n*m); + if (p) + memset (p, 0, n* m); + return p; +} + +void +_assuan_free (void *p) +{ + if (p) + free_func (p); +} + + +/* Store the error in the context so that the error sending function + can take out a descriptive text. Inside the assuan code, use the + macro set_error instead of this function. */ +int +assuan_set_error (ASSUAN_CONTEXT ctx, int err, const char *text) +{ + ctx->err_no = err; + ctx->err_str = text; + return err; +} + +void +assuan_set_pointer (ASSUAN_CONTEXT ctx, void *pointer) +{ + if (ctx) + ctx->user_pointer = pointer; +} + +void * +assuan_get_pointer (ASSUAN_CONTEXT ctx) +{ + return ctx? ctx->user_pointer : NULL; +} + + +void +assuan_set_log_stream (ASSUAN_CONTEXT ctx, FILE *fp) +{ + if (ctx) + { + if (ctx->log_fp) + fflush (ctx->log_fp); + ctx->log_fp = fp; + } +} + + +void +assuan_begin_confidential (ASSUAN_CONTEXT ctx) +{ + if (ctx) + { + ctx->confidential = 1; + } +} + +void +assuan_end_confidential (ASSUAN_CONTEXT ctx) +{ + if (ctx) + { + ctx->confidential = 0; + } +} + +/* Dump a possibly binary string (used for debugging). Distinguish + ascii text from binary and print it accordingly. */ +void +_assuan_log_print_buffer (FILE *fp, const void *buffer, size_t length) +{ + const unsigned char *s; + int n; + + for (n=length,s=buffer; n; n--, s++) + if (!isascii (*s) || iscntrl (*s) || !isprint (*s)) + break; + + s = buffer; + if (!n && *s != '[') + fwrite (buffer, length, 1, fp); + else + { +#ifdef HAVE_FLOCKFILE + flockfile (fp); +#endif + putc_unlocked ('[', fp); + for (n=0; n < length; n++, s++) + fprintf (fp, " %02x", *s); + putc_unlocked (' ', fp); + putc_unlocked (']', fp); +#ifdef HAVE_FUNLOCKFILE + funlockfile (fp); +#endif + } +} + +/* Log a user supplied string. Escapes non-printable before + printing. */ +void +_assuan_log_sanitized_string (const char *string) +{ + const unsigned char *s = string; + FILE *fp = assuan_get_assuan_log_stream (); + + if (! *s) + return; + +#ifdef HAVE_FLOCKFILE + flockfile (fp); +#endif + + for (; *s; s++) + { + int c = 0; + + switch (*s) + { + case '\r': + c = 'r'; + break; + + case '\n': + c = 'n'; + break; + + case '\f': + c = 'f'; + break; + + case '\v': + c = 'v'; + break; + + case '\b': + c = 'b'; + break; + + default: + if (isascii (*s) && isprint (*s)) + putc_unlocked (*s, fp); + else + { + putc_unlocked ('\\', fp); + fprintf (fp, "x%02x", *s); + } + } + + if (c) + { + putc_unlocked ('\\', fp); + putc_unlocked (c, fp); + } + } + +#ifdef HAVE_FUNLOCKFILE + funlockfile (fp); +#endif +} |