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http_aws_sigv4: add additional verbose log statements

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To use curl as a tool for troubleshooting SigV4 signing, it is useful to
have the 'Canonical Request', 'String To Sign' and 'Signature'
calculations output.

Closes #16952
This commit is contained in:
Nigel Brittain 2025-04-03 22:42:04 +00:00 • committed by Daniel Stenberg
parent b809629f8c
commit c871dcb612
No known key found for this signature in database
GPG key ID: 5CC908FDB71E12C2
1 changed files with 7 additions and 1 deletions
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8
lib/http_aws_sigv4.c
View file

@ -813,7 +813,8 @@ CURLcode Curl_output_aws_sigv4(struct Curl_easy *data)
if(!canonical_request)
goto fail;
DEBUGF(infof(data, "Canonical request: %s", canonical_request));
infof(data, "aws_sigv4: Canonical request (enclosed in []) - [%s]",
canonical_request);
request_type = aprintf("%.*s4_request",
(int)Curl_strlen(&provider0), Curl_str(&provider0));
@ -855,6 +856,9 @@ CURLcode Curl_output_aws_sigv4(struct Curl_easy *data)
/* make provider0 part done uppercase */
Curl_strntoupper(str_to_sign, Curl_str(&provider0), Curl_strlen(&provider0));
infof(data, "aws_sigv4: String to sign (enclosed in []) - [%s]",
str_to_sign);
secret = aprintf("%.*s4%s", (int)Curl_strlen(&provider0),
Curl_str(&provider0), data->state.aptr.passwd ?
data->state.aptr.passwd : "");
@ -873,6 +877,8 @@ CURLcode Curl_output_aws_sigv4(struct Curl_easy *data)
sha256_to_hex(sha_hex, sign0);
infof(data, "aws_sigv4: Signature - %s", sha_hex);
auth_headers = aprintf("Authorization: %.*s4-HMAC-SHA256 "
"Credential=%s/%s, "
"SignedHeaders=%s, "