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ssh: canonicize the host name before looking it up in the host file
Re-apply r99054 by des in 2002. This was accidentally dropped by the update to OpenSSH 6.5p1 (r261320). This change is actually taken from r387082 of ports/security/openssh-portable/files/patch-ssh.c PR: 198043 Differential Revision: https://reviews.freebsd.org/D3103 Reviewed by: des Approved by: kib (mentor) MFC after: 3 days Relnotes: yes Sponsored by: Dell Inc.
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=285642
@ -1001,6 +1001,23 @@ main(int ac, char **av)
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shorthost[strcspn(thishost, ".")] = '\0';
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snprintf(portstr, sizeof(portstr), "%d", options.port);
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/* Find canonic host name. */
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if (strchr(host, '.') == 0) {
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struct addrinfo hints;
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struct addrinfo *ai = NULL;
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int errgai;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = options.address_family;
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hints.ai_flags = AI_CANONNAME;
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hints.ai_socktype = SOCK_STREAM;
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errgai = getaddrinfo(host, NULL, &hints, &ai);
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if (errgai == 0) {
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if (ai->ai_canonname != NULL)
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host = xstrdup(ai->ai_canonname);
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freeaddrinfo(ai);
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}
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}
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if (options.local_command != NULL) {
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debug3("expanding LocalCommand: %s", options.local_command);
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cp = options.local_command;
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