58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/* strlcpy: secure version of strcpy(), copied from OpenBSD */
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/*
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* Copy src to string dst of size siz. At most siz-1 characters
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* will be copied. Always NUL terminates (unless siz == 0).
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* Returns strlen(src); if retval >= siz, truncation occurred.
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*/
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size_t
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strlcpy(char *dst, const char *src, size_t siz)
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{
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char *d = dst;
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const char *s = src;
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size_t n = siz;
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/* Copy as many bytes as will fit */
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if (n != 0 && --n != 0) {
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do {
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if ((*d++ = *s++) == 0)
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break;
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} while (--n != 0);
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}
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/* Not enough room in dst, add NUL and traverse rest of src */
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if (n == 0) {
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if (siz != 0)
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*d = '\0'; /* NUL-terminate dst */
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while (*s++)
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;
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}
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return(s - src - 1); /* count does not include NUL */
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}
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void print_arg(char *str) {
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char buf[20];
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int len;
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int buf_sz = (sizeof(buf) - sizeof(NULL)) * sizeof(char *);
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len = strlcpy(buf, str, buf_sz);
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if (len > buf_sz) {
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fprintf(stderr, "Trucation occured when printing %s\n", str);
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}
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fwrite(buf, sizeof(char), len, stdout);
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}
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int main(int argc, char **argv) {
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int i;
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for (i = 1; i < argc; i++) {
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print_arg(argv[i]);
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if (i + 1 != argc) {
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putchar(' ');
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}
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}
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putchar('\n');
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return 0;
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}
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