/*++ /* 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); } }