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(Unicode C) Outlook --Download Attachments for a Specific MessageSee more Outlook ExamplesDemonstrates how to download the attachments for a particular email message. Note: This example requires Chilkat v9.5.0.67 or greater. This example applies to: Exchange Online | Office 365 | Hotmail.com | Live.com | MSN.com | Outlook.com | Passport.com
#include <C_CkHttpW.h> #include <C_CkStringBuilderW.h> #include <C_CkJsonObjectW.h> #include <C_CkBinDataW.h> #include <C_CkDateTimeW.h> #include <C_CkFileAccessW.h> void ChilkatSample(void) { HCkHttpW http; HCkStringBuilderW sbResponse; const wchar_t *messageId; BOOL success; HCkJsonObjectW json; HCkStringBuilderW sbSavePath; HCkBinDataW attachData; HCkDateTimeW lastMod; HCkFileAccessW fac; int i; int numMessages; int sizeInBytes; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. http = CkHttpW_Create(); // Use your previously obtained access token here: // See the following examples for getting an access token: // Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint). // Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint). // Refresh Access Token (Azure AD v2.0 Endpoint). // Refresh Access Token (Azure AD Endpoint). CkHttpW_putAuthToken(http,L"MICROSOFT_GRAPH_ACCESS_TOKEN"); sbResponse = CkStringBuilderW_Create(); // Sends: GET /users/{user_id | userPrincipalName}/messages/{message_id}/attachments // Note: It is also possible to use the literal string "me" for the current logged-on user. // For example: GET /me/messages/{message_id}/attachments CkHttpW_ClearUrlVars(http); CkHttpW_SetUrlVar(http,L"userPrincipalName",L"chilkatsoft@outlook.com"); // Assume we already have a message ID from previously listing the messages in a folder messageId = L"AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAA=="; CkHttpW_SetUrlVar(http,L"message_id",messageId); // Send the request to download the attachments. success = CkHttpW_QuickGetSb(http,L"https://graph.microsoft.com/v1.0/users/{$userPrincipalName}/messages/{$message_id}/attachments",sbResponse); if ((success != TRUE) && (CkHttpW_getLastStatus(http) == 0)) { wprintf(L"%s\n",CkHttpW_lastErrorText(http)); CkHttpW_Dispose(http); CkStringBuilderW_Dispose(sbResponse); return; } // The attachment data is contained within the JSON response. json = CkJsonObjectW_Create(); CkJsonObjectW_LoadSb(json,sbResponse); CkJsonObjectW_putEmitCompact(json,FALSE); wprintf(L"Status code = %d\n",CkHttpW_getLastStatus(http)); if (CkHttpW_getLastStatus(http) != 200) { wprintf(L"%s\n",CkJsonObjectW_emit(json)); wprintf(L"Failed.\n"); } // This is a sample JSON response. The code for parsing and extracting/saving the attachments // is shown below. // { // "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('chilkatsoft%40outlook.com')/messages('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAA%3D%3D')/attachments", // "value": [ // { // "@odata.type": "#microsoft.graph.fileAttachment", // "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAAESABAAft6wtbaSJU6sgQLi98DI0Q==", // "lastModifiedDateTime": "2017-05-10T00:30:51Z", // "name": "fishing.pdf", // "contentType": "application/pdf", // "size": 295680, // "isInline": false, // "contentId": "F861B218BE380F44B16933097FDDACFC@namprd20.prod.outlook.com", // "contentLocation": null, // "contentBytes": "JVBERi0xLjMKJcfsj6 ... yZWYKMjk0MzY5CiUlRU9GCg==" // }, // { // "@odata.type": "#microsoft.graph.fileAttachment", // "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAAESABAAXS7qXQ-iRUCYXnhJpN8Ihg==", // "lastModifiedDateTime": "2017-05-10T00:30:51Z", // "name": "testCert.cer", // "contentType": "application/octet-stream", // "size": 1674, // "isInline": false, // "contentId": "5E51FA33EF0F8941ACC8260395CB1A33@namprd20.prod.outlook.com", // "contentLocation": null, // "contentBytes": "MIIFRjCCBC6gAwIBA ... 7pt3C5w==" // } // ] // } sbSavePath = CkStringBuilderW_Create(); attachData = CkBinDataW_Create(); lastMod = CkDateTimeW_Create(); fac = CkFileAccessW_Create(); i = 0; numMessages = CkJsonObjectW_SizeOfArray(json,L"value"); while (i < numMessages) { CkJsonObjectW_putI(json,i); wprintf(L"name: %s\n",CkJsonObjectW_stringOf(json,L"value[i].name")); wprintf(L"contentType: %s\n",CkJsonObjectW_stringOf(json,L"value[i].contentType")); sizeInBytes = CkJsonObjectW_IntOf(json,L"value[i].size"); wprintf(L"size: %d\n",sizeInBytes); // Extract the data and save to a file. CkStringBuilderW_SetString(sbSavePath,L"qa_output/"); CkStringBuilderW_Append(sbSavePath,CkJsonObjectW_stringOf(json,L"value[i].name")); CkBinDataW_Clear(attachData); CkBinDataW_AppendEncoded(attachData,CkJsonObjectW_stringOf(json,L"value[i].contentBytes"),L"base64"); CkBinDataW_WriteFile(attachData,CkStringBuilderW_getAsString(sbSavePath)); // Get the last-modified date/time and set the output file's last-mod date/time.. CkDateTimeW_SetFromTimestamp(lastMod,CkJsonObjectW_stringOf(json,L"value[i].lastModifiedDateTime")); CkFileAccessW_SetLastModified(fac,CkStringBuilderW_getAsString(sbSavePath),lastMod); wprintf(L"----\n"); i = i + 1; } // The output of the above loop is: // // name: fishing.pdf // contentType: application/pdf // size: 295680 // ---- // name: testCert.cer // contentType: application/octet-stream // size: 1674 // ---- // CkHttpW_Dispose(http); CkStringBuilderW_Dispose(sbResponse); CkJsonObjectW_Dispose(json); CkStringBuilderW_Dispose(sbSavePath); CkBinDataW_Dispose(attachData); CkDateTimeW_Dispose(lastMod); CkFileAccessW_Dispose(fac); } |
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