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tool_writeout: fix %time{} output for %s

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Now testing both %s and %% in test 1981

Reported-by: wulin-nudt on github
Fixes #22038
Closes #22039
This commit is contained in:
Daniel Stenberg 2026-06-16 08:58:36 +02:00
parent 678e63934c
commit e0c6f4d4d6
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GPG key ID: 5CC908FDB71E12C2
2 changed files with 31 additions and 10 deletions
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37
src/tool_writeout.c
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@ -562,18 +562,39 @@ static const char *outtime(const char *ptr, /* %time{ ... */
vlen = end - ptr;
curlx_dyn_init(&format, 1024);
/* insert sub-seconds for %f */
/* insert +0000 for %z because it is otherwise not portable */
/* insert UTC for %Z because it is otherwise not portable */
/* Insert:
- sub-seconds for %f
- epoch seconds for %s; strftime %s uses mktime() and assumes
local time, which breaks UTC output on non-UTC hosts
- +0000 for %z because it is otherwise not portable
- UTC for %Z because it is otherwise not portable
- Keep '%%' as-is so that strftime() makes a single % out of them
*/
for(i = 0; !result && i < vlen; i++) {
if((i < vlen - 1) && ptr[i] == '%' &&
((ptr[i + 1] == 'f') || ((ptr[i + 1] | 0x20) == 'z'))) {
if(ptr[i + 1] == 'f')
if((i < vlen - 1) && ptr[i] == '%') {
switch(ptr[i + 1]) {
case 'f':
result = curlx_dyn_addf(&format, "%06u", usecs);
else if(ptr[i + 1] == 'Z')
break;
case 's': {
/* time_t might be either 32 or 64 bits big */
curl_off_t tsecs = secs;
result = curlx_dyn_addf(&format, "%" CURL_FORMAT_CURL_OFF_T, tsecs);
break;
}
case 'Z':
result = curlx_dyn_addn(&format, "UTC", 3);
else
break;
case 'z':
result = curlx_dyn_addn(&format, "+0000", 5);
break;
case '%':
result = curlx_dyn_addn(&format, "%%", 2);
break;
default:
result = curlx_dyn_addn(&format, &ptr[i], 1);
continue;
}
i++;
}
else