81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/*
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* Copyright (c) 1995-2013 Peter Simons <simons@cryp.to>
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* Copyright (c) 2000-2001 Cable & Wireless GmbH
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* Copyright (c) 1999-2000 CyberSolutions GmbH
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*
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* This program is free software: you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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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: %s", file, strerror(errno));
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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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