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curl: add --follow

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Makes curl follow redirects an act on the response code and change a
custom method accordingly, contrary to --location.

Potential future command line to send QUERY and following a redirect
according to the status code:

    curl -d "request-body" -X QUERY --follow https://example.com

add test 794,796,797

Assisted-by: Daniel Böhmer <post@daniel-boehmer.de>

Closes #16543
This commit is contained in:
Daniel Stenberg 2025-04-25 13:09:00 +02:00
parent 29a6e15b27
commit 13cbabf05f
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GPG key ID: 5CC908FDB71E12C2
16 changed files with 340 additions and 10 deletions
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20
src/tool_getparam.c
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@ -144,6 +144,7 @@ static const struct LongShort aliases[]= {
{"fail-early", ARG_BOOL, ' ', C_FAIL_EARLY},
{"fail-with-body", ARG_BOOL, ' ', C_FAIL_WITH_BODY},
{"false-start", ARG_BOOL, ' ', C_FALSE_START},
{"follow", ARG_BOOL, ' ', C_FOLLOW},
{"form", ARG_STRG, 'F', C_FORM},
{"form-escape", ARG_BOOL, ' ', C_FORM_ESCAPE},
{"form-string", ARG_STRG, ' ', C_FORM_STRING},
@ -2098,12 +2099,6 @@ static ParameterError opt_bool(struct OperationConfig *config,
case C_LIST_ONLY: /* --list-only */
config->dirlistonly = toggle; /* only list the names of the FTP dir */
break;
case C_LOCATION_TRUSTED: /* --location-trusted */
config->unrestricted_auth = toggle;
FALLTHROUGH();
case C_LOCATION: /* --location */
config->followlocation = toggle; /* Follow Location: HTTP headers */
break;
case C_MANUAL: /* --manual */
if(toggle) /* --no-manual shows no manual... */
return PARAM_MANUAL_REQUESTED;
@ -2166,6 +2161,19 @@ static ParameterError opt_bool(struct OperationConfig *config,
case C_MPTCP: /* --mptcp */
config->mptcp = toggle;
break;
case C_LOCATION_TRUSTED: /* --location-trusted */
config->unrestricted_auth = toggle;
FALLTHROUGH();
case C_LOCATION: /* --location */
if(config->followlocation == CURLFOLLOW_OBEYCODE)
warnf(global, "--location overrides --follow");
config->followlocation = toggle ? CURLFOLLOW_ALL : 0;
break;
case C_FOLLOW: /* --follow */
if(config->followlocation == CURLFOLLOW_ALL)
warnf(global, "--follow overrides --location");
config->followlocation = toggle ? CURLFOLLOW_OBEYCODE : 0;
break;
default:
return PARAM_OPTION_UNKNOWN;
}