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Improve some comments in verify_chain()

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Manuel Pégourié-Gonnard 2017-08-23 11:23:59 +02:00
parent 3627a8b2f6
commit a968843429
1 changed files with 6 additions and 2 deletions
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8
library/x509_crt.c
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@ -2219,6 +2219,8 @@ static int x509_crt_check_ee_locally_trusted(
* - [in] trust_ca: the trusted list R1, ..., Rp * - [in] trust_ca: the trusted list R1, ..., Rp
* - [in] ca_crl, profile: as in verify_with_profile() * - [in] ca_crl, profile: as in verify_with_profile()
* - [out] ver_chain: the built and verified chain * - [out] ver_chain: the built and verified chain
* Only valid when return value is 0, may contain garbage otherwise!
* Restart note: need not be the same when calling again to resume.
* - [in-out] rs_ctx: context for restarting operations * - [in-out] rs_ctx: context for restarting operations
* *
* Return value: * Return value:
@ -2234,6 +2236,8 @@ static int x509_crt_verify_chain(
mbedtls_x509_crt_verify_chain *ver_chain, mbedtls_x509_crt_verify_chain *ver_chain,
mbedtls_x509_crt_restart_ctx *rs_ctx ) mbedtls_x509_crt_restart_ctx *rs_ctx )
{ {
/* Don't initialize any of those variables here, so that the compiler can
* catch potential issues with jumping ahead when restarting */
int ret; int ret;
uint32_t *flags; uint32_t *flags;
mbedtls_x509_crt_verify_chain_item *cur; mbedtls_x509_crt_verify_chain_item *cur;
@ -2251,7 +2255,7 @@ static int x509_crt_verify_chain(
/* restore saved state */ /* restore saved state */
child = rs_ctx->child; child = rs_ctx->child;
self_cnt = rs_ctx->self_cnt; self_cnt = rs_ctx->self_cnt;
*ver_chain = rs_ctx->ver_chain; *ver_chain = rs_ctx->ver_chain; /* struct copy */
cur = &ver_chain->items[ver_chain->len - 1]; cur = &ver_chain->items[ver_chain->len - 1];
flags = &cur->flags; flags = &cur->flags;
@ -2312,7 +2316,7 @@ find_parent:
/* save state */ /* save state */
rs_ctx->child = child; rs_ctx->child = child;
rs_ctx->self_cnt = self_cnt; rs_ctx->self_cnt = self_cnt;
rs_ctx-> ver_chain = *ver_chain; rs_ctx->ver_chain = *ver_chain; /* struct copy */
return( ret ); return( ret );
} }