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syncevolution/src/core/eds_abi_wrapper.cpp

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/*
* Copyright (C) 2008 Patrick Ohly
*/
#define EDS_ABI_WRAPPER_NO_REDEFINE 1
#include "eds_abi_wrapper.h"
#include "EvolutionSyncClient.h"
#include <string>
#include <sstream>
#include <dlfcn.h>
#include <stdarg.h>
namespace {
std::string lookupDebug, lookupInfo;
}
int EDSAbiHaveEbook, EDSAbiHaveEcal, EDSAbiHaveEdataserver;
#ifdef EVOLUTION_COMPATIBILITY
struct EDSAbiWrapper EDSAbiWrapperSingleton;
namespace {
/**
* Opens a <basename>.<num> shared object with <num> coming from a
* range of known compatible versions, falling back to even more
* recent ones only after warning about it. Then searches for
* function pointers.
*
* Either all or none of the function pointers are set.
*
* End user information and debug information are added to
* lookupDebug and lookupInfo.
*
* @param libname full name including .so suffix; .<num> gets appended
* @param minver first known compatible version
* @param maxver last known compatible version
* @return dlhandle which must be kept or freed by caller
*/
void *findSymbols(const char *libname, int minver, int maxver, ... /* function pointer address, name, ..., (void *)0 */)
{
void *dlhandle = NULL;
std::ostringstream debug, info;
if (!dlhandle) {
for (int ver = maxver;
ver >= minver;
--ver) {
std::ostringstream soname;
soname << libname << "." << ver;
dlhandle = dlopen(soname.str().c_str(), RTLD_GLOBAL|RTLD_LAZY);
if (dlhandle) {
info << "using " << soname.str() << std::endl;
break;
}
}
}
if (!dlhandle) {
for (int ver = maxver + 1;
ver < maxver + 50;
++ver) {
std::ostringstream soname;
soname << libname << "." << ver;
dlhandle = dlopen(soname.str().c_str(), RTLD_GLOBAL|RTLD_LAZY);
if (dlhandle) {
info << "using " << soname.str() << " - might not be compatible!" << std::endl;
break;
}
}
}
if (!dlhandle) {
debug << libname << " not found (tried major versions " << minver << " to " << maxver + 49 << ")" << std::endl;
} else {
bool allfound = true;
va_list ap;
va_start(ap, maxver);
void **funcptr = va_arg(ap, void **);
const char *symname = NULL;
while (funcptr && allfound) {
symname = va_arg(ap, const char *);
*funcptr = dlsym(dlhandle, symname);
if (!*funcptr) {
debug << symname << " not found" << std::endl;
allfound = false;
}
funcptr = va_arg(ap, void **);
}
va_end(ap);
if (!allfound) {
/* unusable, clear symbols and free handle */
va_start(ap, maxver);
funcptr = va_arg(ap, void **);
while (funcptr) {
va_arg(ap, const char *);
*funcptr = NULL;
funcptr = va_arg(ap, void **);
}
va_end(ap);
info << libname << " unusable, required function no longer available" << std::endl;
dlclose(dlhandle);
dlhandle = NULL;
}
}
lookupInfo += info.str();
lookupDebug += info.str();
lookupDebug += debug.str();
return dlhandle;
}
# ifdef HAVE_EDS
void *edshandle;
# endif
# ifdef ENABLE_EBOOK
void *ebookhandle;
# endif
# ifdef ENABLE_ECAL
void *ecalhandle;
# endif
}
#endif // EVOLUTION_COMPATIBILITY
extern "C" int EDSAbiHaveEbook, EDSAbiHaveEcal, EDSAbiHaveEdataserver;
extern "C" void EDSAbiWrapperInit()
{
static bool initialized;
if (initialized) {
return;
} else {
initialized = true;
}
#ifdef EVOLUTION_COMPATIBILITY
# ifdef HAVE_EDS
edshandle =
findSymbols("libedataserver-1.2.so", 7, 11,
&EDSAbiWrapperSingleton.e_source_get_type, "e_source_get_type",
&EDSAbiWrapperSingleton.e_source_get_uri, "e_source_get_uri",
&EDSAbiWrapperSingleton.e_source_group_get_type, "e_source_group_get_type",
&EDSAbiWrapperSingleton.e_source_group_peek_sources, "e_source_group_peek_sources",
&EDSAbiWrapperSingleton.e_source_list_peek_groups, "e_source_list_peek_groups",
&EDSAbiWrapperSingleton.e_source_peek_name, "e_source_peek_name",
(void *)0);
EDSAbiHaveEdataserver = EDSAbiWrapperSingleton.e_source_group_peek_sources != 0;
# endif // HAVE_EDS
# ifdef ENABLE_EBOOK
ebookhandle =
findSymbols("libebook-1.2.so", 5, 9,
&EDSAbiWrapperSingleton.e_book_add_contact, "e_book_add_contact",
&EDSAbiWrapperSingleton.e_book_authenticate_user, "e_book_authenticate_user",
&EDSAbiWrapperSingleton.e_book_commit_contact, "e_book_commit_contact",
&EDSAbiWrapperSingleton.e_contact_duplicate, "e_contact_duplicate",
&EDSAbiWrapperSingleton.e_contact_get_const, "e_contact_get_const",
&EDSAbiWrapperSingleton.e_contact_get_type, "e_contact_get_type",
&EDSAbiWrapperSingleton.e_contact_new_from_vcard, "e_contact_new_from_vcard",
&EDSAbiWrapperSingleton.e_contact_set, "e_contact_set",
&EDSAbiWrapperSingleton.e_book_error_quark, "e_book_error_quark",
&EDSAbiWrapperSingleton.e_book_get_addressbooks, "e_book_get_addressbooks",
&EDSAbiWrapperSingleton.e_book_get_changes, "e_book_get_changes",
&EDSAbiWrapperSingleton.e_book_get_contact, "e_book_get_contact",
&EDSAbiWrapperSingleton.e_book_get_contacts, "e_book_get_contacts",
&EDSAbiWrapperSingleton.e_book_get_supported_auth_methods, "e_book_get_supported_auth_methods",
&EDSAbiWrapperSingleton.e_book_get_uri, "e_book_get_uri",
&EDSAbiWrapperSingleton.e_book_new, "e_book_new",
&EDSAbiWrapperSingleton.e_book_new_default_addressbook, "e_book_new_default_addressbook",
&EDSAbiWrapperSingleton.e_book_new_from_uri, "e_book_new_from_uri",
&EDSAbiWrapperSingleton.e_book_new_system_addressbook, "e_book_new_system_addressbook",
&EDSAbiWrapperSingleton.e_book_open, "e_book_open",
&EDSAbiWrapperSingleton.e_book_query_any_field_contains, "e_book_query_any_field_contains",
&EDSAbiWrapperSingleton.e_book_query_unref, "e_book_query_unref",
&EDSAbiWrapperSingleton.e_book_remove_contact, "e_book_remove_contact",
&EDSAbiWrapperSingleton.e_vcard_to_string, "e_vcard_to_string",
(void *)0);
EDSAbiHaveEbook = EDSAbiWrapperSingleton.e_book_new != 0;
# endif // ENABLE_EBOOK
# ifdef ENABLE_ECAL
ecalhandle =
findSymbols("libecal-1.2.so", 3, 7,
&EDSAbiWrapperSingleton.e_cal_add_timezone, "e_cal_add_timezone",
&EDSAbiWrapperSingleton.e_cal_component_get_icalcomponent, "e_cal_component_get_icalcomponent",
&EDSAbiWrapperSingleton.e_cal_component_get_last_modified, "e_cal_component_get_last_modified",
&EDSAbiWrapperSingleton.e_cal_component_get_type, "e_cal_component_get_type",
&EDSAbiWrapperSingleton.e_cal_create_object, "e_cal_create_object",
&EDSAbiWrapperSingleton.e_calendar_error_quark, "e_calendar_error_quark",
&EDSAbiWrapperSingleton.e_cal_get_component_as_string, "e_cal_get_component_as_string",
&EDSAbiWrapperSingleton.e_cal_get_object, "e_cal_get_object",
&EDSAbiWrapperSingleton.e_cal_get_object_list_as_comp, "e_cal_get_object_list_as_comp",
&EDSAbiWrapperSingleton.e_cal_get_sources, "e_cal_get_sources",
&EDSAbiWrapperSingleton.e_cal_get_timezone, "e_cal_get_timezone",
&EDSAbiWrapperSingleton.e_cal_modify_object, "e_cal_modify_object",
&EDSAbiWrapperSingleton.e_cal_new, "e_cal_new",
&EDSAbiWrapperSingleton.e_cal_new_from_uri, "e_cal_new_from_uri",
&EDSAbiWrapperSingleton.e_cal_new_system_calendar, "e_cal_new_system_calendar",
&EDSAbiWrapperSingleton.e_cal_new_system_tasks, "e_cal_new_system_tasks",
&EDSAbiWrapperSingleton.e_cal_open, "e_cal_open",
&EDSAbiWrapperSingleton.e_cal_remove_object, "e_cal_remove_object",
&EDSAbiWrapperSingleton.e_cal_remove_object_with_mod, "e_cal_remove_object_with_mod",
&EDSAbiWrapperSingleton.e_cal_set_auth_func, "e_cal_set_auth_func",
&EDSAbiWrapperSingleton.icalcomponent_add_component, "icalcomponent_add_component",
&EDSAbiWrapperSingleton.icalcomponent_as_ical_string, "icalcomponent_as_ical_string",
&EDSAbiWrapperSingleton.icalcomponent_free, "icalcomponent_free",
&EDSAbiWrapperSingleton.icalcomponent_get_first_component, "icalcomponent_get_first_component",
&EDSAbiWrapperSingleton.icalcomponent_get_first_property, "icalcomponent_get_first_property",
&EDSAbiWrapperSingleton.icalcomponent_get_next_component, "icalcomponent_get_next_component",
&EDSAbiWrapperSingleton.icalcomponent_get_next_property, "icalcomponent_get_next_property",
&EDSAbiWrapperSingleton.icalcomponent_get_recurrenceid, "icalcomponent_get_recurrenceid",
&EDSAbiWrapperSingleton.icalcomponent_get_timezone, "icalcomponent_get_timezone",
&EDSAbiWrapperSingleton.icalcomponent_get_uid, "icalcomponent_get_uid",
&EDSAbiWrapperSingleton.icalcomponent_isa, "icalcomponent_isa",
&EDSAbiWrapperSingleton.icalcomponent_new_clone, "icalcomponent_new_clone",
&EDSAbiWrapperSingleton.icalcomponent_new_from_string, "icalcomponent_new_from_string",
&EDSAbiWrapperSingleton.icalcomponent_remove_property, "icalcomponent_remove_property",
&EDSAbiWrapperSingleton.icalcomponent_set_uid, "icalcomponent_set_uid",
&EDSAbiWrapperSingleton.icalcomponent_vanew, "icalcomponent_vanew",
&EDSAbiWrapperSingleton.icalparameter_get_tzid, "icalparameter_get_tzid",
&EDSAbiWrapperSingleton.icalparameter_set_tzid, "icalparameter_set_tzid",
&EDSAbiWrapperSingleton.icalproperty_get_description, "icalproperty_get_description",
&EDSAbiWrapperSingleton.icalproperty_get_first_parameter, "icalproperty_get_first_parameter",
&EDSAbiWrapperSingleton.icalproperty_get_lastmodified, "icalproperty_get_lastmodified",
&EDSAbiWrapperSingleton.icalproperty_get_next_parameter, "icalproperty_get_next_parameter",
&EDSAbiWrapperSingleton.icalproperty_get_summary, "icalproperty_get_summary",
&EDSAbiWrapperSingleton.icalproperty_new_description, "icalproperty_new_description",
&EDSAbiWrapperSingleton.icalproperty_new_summary, "icalproperty_new_summary",
&EDSAbiWrapperSingleton.icalproperty_set_value_from_string, "icalproperty_set_value_from_string",
&EDSAbiWrapperSingleton.icaltime_as_ical_string, "icaltime_as_ical_string",
&EDSAbiWrapperSingleton.icaltimezone_free, "icaltimezone_free",
&EDSAbiWrapperSingleton.icaltimezone_get_builtin_timezone, "icaltimezone_get_builtin_timezone",
&EDSAbiWrapperSingleton.icaltimezone_get_builtin_timezone_from_tzid, "icaltimezone_get_builtin_timezone_from_tzid",
&EDSAbiWrapperSingleton.icaltimezone_get_component, "icaltimezone_get_component",
&EDSAbiWrapperSingleton.icaltimezone_get_tzid, "icaltimezone_get_tzid",
&EDSAbiWrapperSingleton.icaltimezone_new, "icaltimezone_new",
&EDSAbiWrapperSingleton.icaltimezone_set_component, "icaltimezone_set_component",
(void *)0);
EDSAbiHaveEcal = EDSAbiWrapperSingleton.e_cal_new != 0;
# endif // ENABLE_ECAL
#else // EVOLUTION_COMPATIBILITY
# ifdef HAVE_EDS
EDSAbiHaveEdataserver = true;
# endif
# ifdef ENABLE_EBOOK
EDSAbiHaveEbook = true;
# endif
# ifdef ENABLE_ECAL
EDSAbiHaveEcal = true;
# endif
#endif // EVOLUTION_COMPATIBILITY
}
extern "C" const char *EDSAbiWrapperInfo() { return lookupInfo.c_str(); }
extern "C" const char *EDSAbiWrapperDebug() { return lookupDebug.c_str(); }
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