Strophe 0.9 XMPP client library

Data Structures | Macros | Typedefs | Enumerations | Functions
common.h File Reference

Internally used functions and structures. More...

## Data Structures
struct | xmpp_connlist_t
struct | xmpp_ctx_t
struct | xmpp_send_queue_t
struct | xmpp_handlist_t
struct | xmpp_conn_t
struct | xmpp_stanza_t

## Macros
#define | UNUSED(x) ((void)(x))
#define | MAX_DOMAIN_LEN 256
#define | SASL_MASK_PLAIN (1 << 0)
#define | SASL_MASK_DIGESTMD5 (1 << 1)
#define | SASL_MASK_ANONYMOUS (1 << 2)
#define | SASL_MASK_SCRAMSHA1 (1 << 3)

## Typedefs
typedef void(* | xmpp_open_handler) (xmpp_conn_t *const conn)

## Enumerations
enum | xmpp_loop_status_t { XMPP_LOOP_NOTSTARTED , XMPP_LOOP_RUNNING , XMPP_LOOP_QUIT }
| run-time context More...
enum | xmpp_conn_state_t { XMPP_STATE_DISCONNECTED , XMPP_STATE_CONNECTING , XMPP_STATE_CONNECTED }
| connection More...
enum | { XMPP_PORT_CLIENT = 5222 , XMPP_PORT_CLIENT_LEGACY_SSL = 5223 , XMPP_PORT_COMPONENT = 5347 }
enum | xmpp_stanza_type_t { XMPP_STANZA_UNKNOWN , XMPP_STANZA_TEXT , XMPP_STANZA_TAG }

## Functions
void * | xmpp_alloc (const xmpp_ctx_t *const ctx, const size_t size)
| Allocate memory in a Strophe context.
void * | xmpp_realloc (const xmpp_ctx_t *const ctx, void *p, const size_t size)
| Reallocate memory in a Strophe context.
char * | xmpp_strdup (const xmpp_ctx_t *const ctx, const char *const s)
| implement our own strdup that uses the ctx allocator
void | xmpp_log (const xmpp_ctx_t *const ctx, const xmpp_log_level_t level, const char *const area, const char *const fmt, va_list ap)
| Write a log message to the logger.
void | xmpp_error (const xmpp_ctx_t *const ctx, const char *const area, const char *const fmt,...)
| Write to the log at the ERROR level.
void | xmpp_warn (const xmpp_ctx_t *const ctx, const char *const area, const char *const fmt,...)
| Write to the log at the WARN level.
void | xmpp_info (const xmpp_ctx_t *const ctx, const char *const area, const char *const fmt,...)
| Write to the log at the INFO level.
void | xmpp_debug (const xmpp_ctx_t *const ctx, const char *const area, const char *const fmt,...)
| Write to the log at the DEBUG level.
void | conn_disconnect (xmpp_conn_t *const conn)
| Disconnect from the XMPP server.
void | conn_disconnect_clean (xmpp_conn_t *const conn)
| Cleanly disconnect the connection.
void | conn_established (xmpp_conn_t *const conn)
void | conn_open_stream (xmpp_conn_t *const conn)
| Send the opening <stream:stream> tag to the server.
int | conn_tls_start (xmpp_conn_t *const conn)
void | conn_prepare_reset (xmpp_conn_t *const conn, xmpp_open_handler handler)
void | conn_parser_reset (xmpp_conn_t *const conn)
void | handler_fire_stanza (xmpp_conn_t *const conn, xmpp_stanza_t *const stanza)
| Fire off all stanza handlers that match.
uint64_t | handler_fire_timed (xmpp_ctx_t *const ctx)
| Fire off all timed handlers that are ready.
void | handler_reset_timed (xmpp_conn_t *conn, int user_only)
| Reset all timed handlers.
void | handler_add_timed (xmpp_conn_t *const conn, xmpp_timed_handler handler, const unsigned long period, void *const userdata)
| Add a timed system handler.
void | handler_add_id (xmpp_conn_t *const conn, xmpp_handler handler, const char *const id, void *const userdata)
| Add an id based system stanza handler.
void | handler_add (xmpp_conn_t *const conn, xmpp_handler handler, const char *const ns, const char *const name, const char *const type, void *const userdata)
| Add a system stanza handler.
void | handler_system_delete_all (xmpp_conn_t *conn)
| Delete all system handlers.
void | disconnect_mem_error (xmpp_conn_t *const conn)
| Disconnect the stream with a memory error.
void | auth_handle_open (xmpp_conn_t *const conn)
| Set up handlers at stream start.
void | auth_handle_component_open (xmpp_conn_t *const conn)
void | auth_handle_open_raw (xmpp_conn_t *const conn)
void | auth_handle_open_stub (xmpp_conn_t *const conn)
int | xmpp_snprintf (char *str, size_t count, const char *fmt,...)
int | xmpp_vsnprintf (char *str, size_t count, const char *fmt, va_list arg)

## Detailed Description

Internally used functions and structures.

## Macro Definition Documentation

## ◆ UNUSED

#define UNUSED | ( |  | x | ) | ((void)(x))

## ◆ MAX_DOMAIN_LEN

#define MAX_DOMAIN_LEN 256

## ◆ SASL_MASK_PLAIN

#define SASL_MASK_PLAIN (1 << 0)

## ◆ SASL_MASK_DIGESTMD5

#define SASL_MASK_DIGESTMD5 (1 << 1)

## ◆ SASL_MASK_ANONYMOUS

#define SASL_MASK_ANONYMOUS (1 << 2)

## ◆ SASL_MASK_SCRAMSHA1

#define SASL_MASK_SCRAMSHA1 (1 << 3)

## Typedef Documentation

## ◆ xmpp_open_handler

typedef void(* xmpp_open_handler) (xmpp_conn_t *const conn)

## Enumeration Type Documentation

## ◆ xmpp_loop_status_t

enum xmpp_loop_status_t

run-time context

Enumerator
XMPP_LOOP_NOTSTARTED |
XMPP_LOOP_RUNNING |
XMPP_LOOP_QUIT |

## ◆ xmpp_conn_state_t

enum xmpp_conn_state_t

connection

Enumerator
XMPP_STATE_DISCONNECTED |
XMPP_STATE_CONNECTING |
XMPP_STATE_CONNECTED |

## ◆ anonymous enum

anonymous enum

Enumerator
XMPP_PORT_CLIENT |
XMPP_PORT_CLIENT_LEGACY_SSL |
XMPP_PORT_COMPONENT |

## ◆ xmpp_stanza_type_t

enum xmpp_stanza_type_t

Enumerator
XMPP_STANZA_UNKNOWN |
XMPP_STANZA_TEXT |
XMPP_STANZA_TAG |

## Function Documentation

## ◆ xmpp_alloc()

void * xmpp_alloc | ( | const xmpp_ctx_t *const | ctx,
|  | const size_t | size )

Allocate memory in a Strophe context.

All Strophe functions will use this to allocate memory.

Parameters

  ctx | a Strophe context object
  size | the number of bytes to allocate

Returns
  a pointer to the allocated memory or NULL on an error

## ◆ xmpp_realloc()

void * xmpp_realloc | ( | const xmpp_ctx_t *const | ctx,
|  | void * | p,
|  | const size_t | size )

Reallocate memory in a Strophe context.

All Strophe functions will use this to reallocate memory.

Parameters

  ctx | a Strophe context object
  p | a pointer to previously allocated memory
  size | the new size in bytes to allocate

Returns
  a pointer to the reallocated memory or NULL on an error

## ◆ xmpp_strdup()

char * xmpp_strdup | ( | const xmpp_ctx_t *const | ctx,
|  | const char *const | s )

implement our own strdup that uses the ctx allocator

Duplicate a string. This function replaces the standard strdup library call with a version that uses the Strophe context object's allocator.

Parameters

  ctx | a Strophe context object
  s | a string

Returns
  a new allocates string with the same data as s or NULL on error

## ◆ xmpp_log()

void xmpp_log | ( | const xmpp_ctx_t *const | ctx,
|  | const xmpp_log_level_t | level,
|  | const char *const | area,
|  | const char *const | fmt,
|  | va_list | ap )

Write a log message to the logger.

Write a log message to the logger for the context for the specified level and area. This function takes a printf-style format string and a variable argument list (in va_list) format. This function is not meant to be called directly, but is used via xmpp_error, xmpp_warn, xmpp_info, and xmpp_debug.

Parameters

  ctx | a Strophe context object
  level | the level at which to log
  area | the area to log for
  fmt | a printf-style format string for the message
  ap | variable argument list supplied for the format string

## ◆ xmpp_error()

void xmpp_error | ( | const xmpp_ctx_t *const | ctx,
|  | const char *const | area,
|  | const char *const | fmt,
|  |  | ... )

Write to the log at the ERROR level.

This is a convenience function for writing to the log at the ERROR level. It takes a printf-style format string followed by a variable list of arguments for formatting.

Parameters

  ctx | a Strophe context object
  area | the area to log for
  fmt | a printf-style format string followed by a variable list of arguments to format

## ◆ xmpp_warn()

void xmpp_warn | ( | const xmpp_ctx_t *const | ctx,
|  | const char *const | area,
|  | const char *const | fmt,
|  |  | ... )

Write to the log at the WARN level.

This is a convenience function for writing to the log at the WARN level. It takes a printf-style format string followed by a variable list of arguments for formatting.

Parameters

  ctx | a Strophe context object
  area | the area to log for
  fmt | a printf-style format string followed by a variable list of arguments to format

## ◆ xmpp_info()

void xmpp_info | ( | const xmpp_ctx_t *const | ctx,
|  | const char *const | area,
|  | const char *const | fmt,
|  |  | ... )

Write to the log at the INFO level.

This is a convenience function for writing to the log at the INFO level. It takes a printf-style format string followed by a variable list of arguments for formatting.

Parameters

  ctx | a Strophe context object
  area | the area to log for
  fmt | a printf-style format string followed by a variable list of arguments to format

## ◆ xmpp_debug()

void xmpp_debug | ( | const xmpp_ctx_t *const | ctx,
|  | const char *const | area,
|  | const char *const | fmt,
|  |  | ... )

Write to the log at the DEBUG level.

This is a convenience function for writing to the log at the DEBUG level. It takes a printf-style format string followed by a variable list of arguments for formatting.

Parameters

  ctx | a Strophe context object
  area | the area to log for
  fmt | a printf-style format string followed by a variable list of arguments to format

## ◆ conn_disconnect()

void conn_disconnect | ( | xmpp_conn_t *const | conn | ) |

Disconnect from the XMPP server.

This function immediately disconnects from the XMPP server, and should not be used outside of the Strophe library.

Parameters

  conn | a Strophe connection object

## ◆ conn_disconnect_clean()

void conn_disconnect_clean | ( | xmpp_conn_t *const | conn | ) |

Cleanly disconnect the connection.

This function is only called by the stream parser when </stream:stream> is received, and it not intended to be called by code outside of Strophe.

Parameters

  conn | a Strophe connection object

## ◆ conn_established()

void conn_established | ( | xmpp_conn_t *const | conn | ) |

## ◆ conn_open_stream()

void conn_open_stream | ( | xmpp_conn_t *const | conn | ) |

Send the opening <stream:stream> tag to the server.

This function is used by Strophe to begin an XMPP stream. It should not be used outside of the library.

Parameters

  conn | a Strophe connection object

## ◆ conn_tls_start()

int conn_tls_start | ( | xmpp_conn_t *const | conn | ) |

## ◆ conn_prepare_reset()

void conn_prepare_reset | ( | xmpp_conn_t *const | conn,
|  | xmpp_open_handler | handler )

## ◆ conn_parser_reset()

void conn_parser_reset | ( | xmpp_conn_t *const | conn | ) |

## ◆ handler_fire_stanza()

void handler_fire_stanza | ( | xmpp_conn_t *const | conn,
|  | xmpp_stanza_t *const | stanza )

Fire off all stanza handlers that match.

This function is called internally by the event loop whenever stanzas are received from the XMPP server.

Parameters

  conn | a Strophe connection object
  stanza | a Strophe stanza object

## ◆ handler_fire_timed()

uint64_t handler_fire_timed | ( | xmpp_ctx_t *const | ctx | ) |

Fire off all timed handlers that are ready.

This function is called internally by the event loop.

Parameters

  ctx | a Strophe context object

Returns
  the time in milliseconds until the next handler will be ready

## ◆ handler_reset_timed()

void handler_reset_timed | ( | xmpp_conn_t * | conn,
|  | int | user_only )

Reset all timed handlers.

This function is called internally when a connection is successful.

Parameters

  conn | a Strophe connection object
  user_only | whether to reset all handlers or only user ones

## ◆ handler_add_timed()

void handler_add_timed | ( | xmpp_conn_t *const | conn,
|  | xmpp_timed_handler | handler,
|  | const unsigned long | period,
|  | void *const | userdata )

Add a timed system handler.

This function is used to add internal timed handlers and should not be used outside of the library.

Parameters

  conn | a Strophe connection object
  handler | a function pointer to a timed handler
  period | the time in milliseconds between firings
  userdata | an opaque data pointer that will be passed to the handler

## ◆ handler_add_id()

void handler_add_id | ( | xmpp_conn_t *const | conn,
|  | xmpp_handler | handler,
|  | const char *const | id,
|  | void *const | userdata )

Add an id based system stanza handler.

This function is used to add internal id based stanza handlers and should not be used outside of the library.

Parameters

  conn | a Strophe connection object
  handler | a function pointer to a stanza handler
  id | a string with the id
  userdata | an opaque data pointer that will be passed to the handler

## ◆ handler_add()

void handler_add | ( | xmpp_conn_t *const | conn,
|  | xmpp_handler | handler,
|  | const char *const | ns,
|  | const char *const | name,
|  | const char *const | type,
|  | void *const | userdata )

Add a system stanza handler.

This function is used to add internal stanza handlers and should not be used outside of the library.

Parameters

  conn | a Strophe connection object
  handler | a function pointer to a stanza handler
  ns | a string with the namespace to match
  name | a string with the stanza name to match
  type | a string with the 'type' attribute value to match
  userdata | an opaque data pointer that will be passed to the handler

## ◆ handler_system_delete_all()

void handler_system_delete_all | ( | xmpp_conn_t * | conn | ) |

Delete all system handlers.

This function is used to reset conn object before re-connecting.

Parameters

  conn | a Strophe connection object

## ◆ disconnect_mem_error()

void disconnect_mem_error | ( | xmpp_conn_t *const | conn | ) |

Disconnect the stream with a memory error.

This is a convenience function used internally by various parts of the Strophe library for terminating the connection because of a memory error.

Parameters

  conn | a Strophe connection object

## ◆ auth_handle_open()

void auth_handle_open | ( | xmpp_conn_t *const | conn | ) |

Set up handlers at stream start.

This function is called internally to Strophe for handling the opening of an XMPP stream. It's called by the parser when a stream is opened or reset, and adds the initial handlers for <stream:error/> and <stream:features/>. This function is not intended for use outside of Strophe.

Parameters

  conn | a Strophe connection object

## ◆ auth_handle_component_open()

void auth_handle_component_open | ( | xmpp_conn_t *const | conn | ) |

## ◆ auth_handle_open_raw()

void auth_handle_open_raw | ( | xmpp_conn_t *const | conn | ) |

## ◆ auth_handle_open_stub()

void auth_handle_open_stub | ( | xmpp_conn_t *const | conn | ) |

## ◆ xmpp_snprintf()

int xmpp_snprintf | ( | char * | str,
|  | size_t | count,
|  | const char * | fmt,
|  |  | ... )

## ◆ xmpp_vsnprintf()

int xmpp_vsnprintf | ( | char * | str,
|  | size_t | count,
|  | const char * | fmt,
|  | va_list | arg )