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Annotation of embedaddon/sudo/plugins/sudoers/logwrap.c, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (c) 2011 Todd C. Miller <Todd.Miller@courtesan.com>
                      3:  *
                      4:  * Permission to use, copy, modify, and distribute this software for any
                      5:  * purpose with or without fee is hereby granted, provided that the above
                      6:  * copyright notice and this permission notice appear in all copies.
                      7:  *
                      8:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                      9:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     10:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     11:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     12:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     13:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     14:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     15:  */
                     16: 
                     17: #include <config.h>
                     18: 
                     19: #include <sys/types.h>
                     20: #include <stdio.h>
                     21: #ifdef STDC_HEADERS
                     22: # include <stdlib.h>
                     23: # include <stddef.h>
                     24: #else
                     25: # ifdef HAVE_STDLIB_H
                     26: #  include <stdlib.h>
                     27: # endif
                     28: #endif /* STDC_HEADERS */
                     29: #ifdef HAVE_STRING_H
                     30: # include <string.h>
                     31: #endif /* HAVE_STRING_H */
                     32: #ifdef HAVE_STRINGS_H
                     33: # include <strings.h>
                     34: #endif /* HAVE_STRINGS_H */
                     35: 
                     36: #include "sudoers.h"
                     37: 
                     38: void
                     39: writeln_wrap(FILE *fp, char *line, size_t len, size_t maxlen)
                     40: {
                     41:     char *indent = "";
                     42:     char *beg = line;
                     43:     char *end;
                     44: 
                     45:     /*
                     46:      * Print out line with word wrap around maxlen characters.
                     47:      */
                     48:     beg = line;
                     49:     while (len > maxlen) {
                     50:        end = beg + maxlen;
                     51:        while (end != beg && *end != ' ')
                     52:            end--;
                     53:        if (beg == end) {
                     54:            /* Unable to find word break within maxlen, look beyond. */
                     55:            end = strchr(beg + maxlen, ' ');
                     56:            if (end == NULL)
                     57:                break;  /* no word break */
                     58:        }
                     59:        fprintf(fp, "%s%.*s\n", indent, (int)(end - beg), beg);
                     60:        while (*end == ' ')
                     61:            end++;
                     62:        len -= (end - beg);
                     63:        beg = end;
                     64:        if (indent[0] == '\0') {
                     65:            indent = LOG_INDENT;
                     66:            maxlen -= sizeof(LOG_INDENT) - 1;
                     67:        }
                     68:     }
                     69:     /* Print remainder, if any. */
                     70:     if (len)
                     71:        fprintf(fp, "%s%s\n", indent, beg);
                     72: }