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im-sdk  12.3.91
Functions
im-connect.c File Reference
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <iiimp-data.h>
#include <iiimp-opcode.h>
#include "iiimp-dataP.h"

Go to the source code of this file.

Functions

IIIMP_messageiiimp_connect_new (IIIMP_data_s *data_s, IIIMP_string *user_name, IIIMP_string *auth)
void iiimp_connect_delete (IIIMP_data_s *data_s, IIIMP_message *m)
uchar_t * iiimp_connect_pack (IIIMP_data_s *data_s, IIIMP_string *user_name, IIIMP_string *auth_protocol, size_t *buf_size)
IIIMP_messageiiimp_connect_unpack (IIIMP_data_s *data_s, IIIMP_card7 opcode, size_t *nbyte, const uchar_t **ptr)
void iiimp_connect_print (IIIMP_data_s *data_s, IIIMP_message *m)

Function Documentation

void iiimp_connect_delete ( IIIMP_data_s *  data_s,
IIIMP_message m 
)

Definition at line 39 of file im-connect.c.

{
    if (NULL == m) return;
    iiimp_string_delete(data_s, m->v.connect.user_name);
    iiimp_string_list_delete(data_s, m->v.connect.auth);
    free(m);
    return;
}

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IIIMP_message* iiimp_connect_new ( IIIMP_data_s *  data_s,
IIIMP_string user_name,
IIIMP_string auth 
)

Definition at line 12 of file im-connect.c.

{
    IIIMP_message *  m;
    int                     i;
    m = (IIIMP_message *)malloc(sizeof (IIIMP_message));
    if (NULL == m) {
       data_s->status = IIIMP_DATA_MALLOC_ERROR;
       return NULL;
    }
    m->opcode = IM_CONNECT;
    m->im_id = -1;
    m->ic_id = -1;
    i = 1;
    m->v.connect.byte_order = ((0x01 == *((char *)(&i))) ?
                            IM_CONNECT_LITTLE_ENDIAN :
                            IM_CONNECT_BIG_ENDIAN);
    m->v.connect.protocol_version = data_s->protocol_version;
    m->v.connect.user_name = user_name;
    m->v.connect.auth = auth;
    return m;
}

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uchar_t* iiimp_connect_pack ( IIIMP_data_s *  data_s,
IIIMP_string user_name,
IIIMP_string auth_protocol,
size_t *  buf_size 
)

Definition at line 50 of file im-connect.c.

{
    size_t           nbyte;
    int                     length;
    uchar_t *        buf;
    size_t           rest;
    uchar_t *        p;
    IIIMP_card8             byte_order;
    int                     i;
    IIIMP_string *   a;
    size_t           auth_nbyte;

    nbyte = 0;
    nbyte += (1 + 1);              /* byte order + protocol version */
    nbyte += user_name->nbyte;     /* user name */
    nbyte += 2;                    /* byte length of client auth protocol names */
    for (auth_nbyte = 0, a = auth_protocol; NULL != a; a = a->next) {
       auth_nbyte += a->nbyte;
    }
    nbyte += auth_nbyte;    /* client auth protocol names */

    length = (nbyte >> 2);
    *buf_size = (1 + 3 + nbyte);

    buf = (uchar_t *)malloc(1 + 3 + nbyte);
    if (NULL == buf) {
       data_s->status = IIIMP_DATA_MALLOC_ERROR;
       return NULL;
    }

    PUT_PACKET_HEADER(buf, IM_CONNECT, length);

    rest = nbyte;
    p = (buf + 4);

    i = 1;
    byte_order = ((0x01 == *((char *)(&i))) ?
                IM_CONNECT_LITTLE_ENDIAN :
                IM_CONNECT_BIG_ENDIAN);

    PUTU8(byte_order, rest, p, data_s->byte_swap);
    PUTU8(data_s->protocol_version, rest, p, data_s->byte_swap);
    iiimp_string_pack(data_s, user_name, &rest, &p);
    PUTU16(auth_nbyte, rest, p, data_s->byte_swap);
    iiimp_string_list_pack(data_s, auth_protocol, &rest, &p);

    return buf;
}

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void iiimp_connect_print ( IIIMP_data_s *  data_s,
IIIMP_message m 
)

Definition at line 205 of file im-connect.c.

{
    IIIMP_connect_v *       v;

    v = &(m->v.connect);

    iiimp_message_header_print(data_s, m->opcode, -1, -1);

    switch (v->byte_order) {
    case IM_CONNECT_BIG_ENDIAN:
       (void)fprintf(data_s->print_fp, "\t%s\n", "big endian");
       break;
    case IM_CONNECT_LITTLE_ENDIAN:
       (void)fprintf(data_s->print_fp, "\t%s\n", "little endian");
       break;
    default:
       (void)fprintf(data_s->print_fp, "\t%s\n", "unknown endian");
       break;
    }

    (void)fprintf(data_s->print_fp, "\tprotocol_version = 0x%02x\n",
                v->protocol_version);

    (void)fprintf(data_s->print_fp, "\tuser name = ");
    iiimp_string_print(data_s, v->user_name);
    (void)fputc('\n', data_s->print_fp);

    (void)fprintf(data_s->print_fp, "\tauth protocol name = ");
    iiimp_string_list_print(data_s, v->auth);
    (void)fputc('\n', data_s->print_fp);
}

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IIIMP_message* iiimp_connect_unpack ( IIIMP_data_s *  data_s,
IIIMP_card7  opcode,
size_t *  nbyte,
const uchar_t **  ptr 
)

Definition at line 105 of file im-connect.c.

{
    IIIMP_message *  m;
    IIIMP_connect_v *       v;
    size_t           rest;
    const uchar_t *  p;
    int                     len;
    int                     endian;
    int                     protocol_version;

    rest = *nbyte;
    p = *ptr;

    if (rest < (1 + 1 + 4 + 2)) {
       data_s->status = IIIMP_DATA_INVALID;
       return NULL;
    }

    m = (IIIMP_message *)malloc(sizeof (IIIMP_message));
    if (NULL == m) {
       data_s->status = IIIMP_DATA_MALLOC_ERROR;
       return NULL;
    }
    v = &(m->v.connect);

    m->opcode = opcode;
    m->im_id = -1;
    m->ic_id = -1;
    v->user_name = NULL;
    v->auth = NULL;

    GETU8(v->byte_order, rest, p, 0);
    endian = 0x01;
    if (0x01 == (*(uchar_t *)(&endian))) {
       /* little endian */
       if (IM_CONNECT_BIG_ENDIAN == v->byte_order) {
           data_s->byte_swap = 1;
       } else {
           data_s->byte_swap = 0;
       }
    } else {
       /* big endian */
       if (IM_CONNECT_BIG_ENDIAN == v->byte_order) {
           data_s->byte_swap = 0;
       } else {
           data_s->byte_swap = 1;
       }
    }
    if ((IM_CONNECT_BIG_ENDIAN != v->byte_order) &&
       (IM_CONNECT_LITTLE_ENDIAN != v->byte_order)) {
       free(m);
       data_s->status = IIIMP_DATA_INVALID;
       return NULL;
    }

    GETU8(v->protocol_version, rest, p, data_s->byte_swap);

    if (v->protocol_version == 0x31) {
       /* Unfortunately, some old client sends '1'(0x31)
          as a version number.   We regard it as version 1.  */
       protocol_version = 1;
    } else {
       protocol_version = v->protocol_version;
    }

    if (protocol_version < data_s->protocol_version) {
       /* If the requested version is lower than the supported version,
          downgrade it.  */
       data_s->protocol_version = protocol_version;
    }

    v->user_name = iiimp_string_unpack(data_s, &rest, &p, rest);
    if ((NULL == v->user_name) || (rest < 2)) {
       iiimp_connect_delete(data_s, m);
       return NULL;
    }

    GETU16(len, rest, p, data_s->byte_swap);
    if ((len < 0) || (rest < len)) {
       iiimp_connect_delete(data_s, m);
       data_s->status = IIIMP_DATA_INVALID;
       return NULL;
    }
    if (0 < len) {
       v->auth = iiimp_string_list_unpack(data_s, &rest, &p, len);
       if (NULL == v->auth) {
           iiimp_connect_delete(data_s, m);
           return NULL;
       }
    }

    return m;
}

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