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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:18:56 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:18:56 +0000 |
commit | b7c15c31519dc44c1f691e0466badd556ffe9423 (patch) | |
tree | f944572f288bab482a615e09af627d9a2b6727d8 /src/util/recv_pass_attr.c | |
parent | Initial commit. (diff) | |
download | postfix-b7c15c31519dc44c1f691e0466badd556ffe9423.tar.xz postfix-b7c15c31519dc44c1f691e0466badd556ffe9423.zip |
Adding upstream version 3.7.10.upstream/3.7.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/util/recv_pass_attr.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/src/util/recv_pass_attr.c b/src/util/recv_pass_attr.c new file mode 100644 index 0000000..0d6c647 --- /dev/null +++ b/src/util/recv_pass_attr.c @@ -0,0 +1,98 @@ +/*++ +/* NAME +/* recv_pass_attr 3 +/* SUMMARY +/* predicate if string is all numerical +/* SYNOPSIS +/* #include <listen.h> +/* +/* int recv_pass_attr(fd, attr, timeout, bufsize) +/* int fd; +/* HTABLE **attr; +/* int timeout; +/* ssize_t bufsize; +/* DESCRIPTION +/* recv_pass_attr() receives named attributes over the specified +/* descriptor. The result value is zero for success, -1 for error. +/* +/* Arguments: +/* .IP fd +/* The file descriptor to read from. +/* .IP attr +/* Pointer to attribute list pointer. The target is set to +/* zero on error or when the received attribute list is empty, +/* otherwise it is assigned a pointer to non-empty attribute +/* list. +/* .IP timeout +/* The deadline for receiving all attributes. +/* .IP bufsize +/* The read buffer size. Specify 1 to avoid reading past the +/* end of the attribute list. +/* LICENSE +/* .ad +/* .fi +/* The Secure Mailer license must be distributed with this software. +/* AUTHOR(S) +/* Wietse Venema +/* IBM T.J. Watson Research +/* P.O. Box 704 +/* Yorktown Heights, NY 10598, USA +/* +/* Wietse Venema +/* Google, Inc. +/* 111 8th Avenue +/* New York, NY 10011, USA +/*--*/ + +/* System library. */ + +#include <sys_defs.h> + +/* Utility library. */ + +#include <iostuff.h> +#include <htable.h> +#include <vstream.h> +#include <attr.h> +#include <mymalloc.h> +#include <listen.h> + +/* recv_pass_attr - receive connection attributes */ + +int recv_pass_attr(int fd, HTABLE **attr, int timeout, ssize_t bufsize) +{ + VSTREAM *fp; + int stream_err; + + /* + * Set up a temporary VSTREAM to receive the attributes. + * + * XXX We use one-character reads to simplify the implementation. + */ + fp = vstream_fdopen(fd, O_RDWR); + vstream_control(fp, + CA_VSTREAM_CTL_BUFSIZE(bufsize), + CA_VSTREAM_CTL_TIMEOUT(timeout), + CA_VSTREAM_CTL_START_DEADLINE, + CA_VSTREAM_CTL_END); + stream_err = (attr_scan(fp, ATTR_FLAG_NONE, + ATTR_TYPE_HASH, *attr = htable_create(1), + ATTR_TYPE_END) < 0 + || vstream_feof(fp) || vstream_ferror(fp)); + vstream_fdclose(fp); + + /* + * Error reporting and recovery. + */ + if (stream_err) { + htable_free(*attr, myfree); + *attr = 0; + return (-1); + } else { + if ((*attr)->used == 0) { + htable_free(*attr, myfree); + *attr = 0; + } + return (0); + } +} |