24bae40be7
always will be licensed under GPL, so use "Petidomo" as the program name everywhere and consistently.
79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
/*
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$Source$
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$Revision$
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Copyright (C) 2000 by Peter Simons <simons@computer.org>
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This file is part of Petidomo.
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Petidomo 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 2, or (at your option)
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any later version.
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Petidomo is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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*/
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#include <string.h>
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#include <ctype.h>
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#include <errno.h>
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#include "libtext/text.h"
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#include "petidomo.h"
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/*
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* rc == 0: Address is not on list.
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* rc == -1: Error occured while reading the file.
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* rc == 1: Address is on list.
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*/
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int is_address_on_list(const char* file, const char* address)
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{
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char * list;
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char * p;
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unsigned int len;
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int rc;
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list = loadfile(file);
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if (list == NULL)
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{
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if (errno == ENOENT)
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return 0;
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else
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return -1;
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}
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for (len = strlen(address), p = list; *p != '\0'; p = text_find_next_line(p))
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{
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if (strncasecmp(p, address, len) == 0 &&
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(p == list || p[-1] == '\n') &&
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(isspace((int)p[len]) || p[len] == '\0'))
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{
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break;
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}
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}
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rc = ((*p != '\0') ? 1 : 0);
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free(list);
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return rc;
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}
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int add_address(const char* file, const char* address)
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{
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FILE* fh;
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int rc = is_address_on_list(file, address);
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if (rc != 0)
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return rc;
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fh = fopen(file, "a");
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if (fh == NULL)
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{
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syslog(LOG_ERR, "Failed to open file \"%s\" for writing: %m", file);
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return -1;
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}
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fprintf(fh, "%s\n", address);
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fclose(fh);
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return 0;
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}
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