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Commit3c18409

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libpq: If ALPN is not used, make PQsslAttribute(conn, "alpn") == ""
The documentation says that PQsslAttribute(conn, "alpn") returns anempty string if ALPN is not used, but the code actually returnedNULL. Fix the code to match the documentation.Reported-by: Michael PaquierDiscussion:https://www.postgresql.org/message-id/ZideNHji0G4gxmc3@paquier.xyz
1 parent592a228 commit3c18409

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-2
lines changed

2 files changed

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‎src/bin/psql/command.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -3896,7 +3896,7 @@ printSSLInfo(void)
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protocol ?protocol :_("unknown"),
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cipher ?cipher :_("unknown"),
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(compression&&strcmp(compression,"off")!=0) ?_("on") :_("off"),
3899-
alpn ?alpn :_("none"));
3899+
(alpn&&alpn[0]!='\0') ?alpn :_("none"));
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}
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/*

‎src/interfaces/libpq/fe-secure-openssl.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1837,7 +1837,7 @@ PQsslAttribute(PGconn *conn, const char *attribute_name)
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SSL_get0_alpn_selected(conn->ssl,&data,&len);
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if (data==NULL||len==0||len>sizeof(alpn_str)-1)
1840-
returnNULL;
1840+
return"";
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memcpy(alpn_str,data,len);
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alpn_str[len]=0;
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returnalpn_str;

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