52 lines
909 B
C
52 lines
909 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include "portability.h"
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int
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pcap_vasprintf(char **strp, const char *format, va_list args)
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{
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int len;
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size_t str_size;
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char *str;
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int ret;
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len = _vscprintf(format, args);
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if (len == -1) {
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*strp = NULL;
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return (-1);
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}
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str_size = len + 1;
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str = malloc(str_size);
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if (str == NULL) {
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*strp = NULL;
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return (-1);
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}
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ret = vsnprintf(str, str_size, format, args);
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if (ret == -1) {
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free(str);
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*strp = NULL;
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return (-1);
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}
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*strp = str;
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/*
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* vsnprintf() shouldn't truncate the string, as we have
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* allocated a buffer large enough to hold the string, so its
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* return value should be the number of characters printed.
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*/
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return (ret);
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}
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int
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pcap_asprintf(char **strp, const char *format, ...)
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{
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va_list args;
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int ret;
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va_start(args, format);
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ret = pcap_vasprintf(strp, format, args);
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va_end(args);
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return (ret);
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}
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