Actual source code: google.c
1: #include <petscwebclient.h>
2: PETSC_PRAGMA_DIAGNOSTIC_IGNORED_BEGIN("-Wdeprecated-declarations")
4: /*
5: These variables identify the code as a PETSc application to Google.
7: See - https://stackoverflow.com/questions/4616553/using-oauth-in-free-open-source-software
8: Users can get their own application IDs - https://code.google.com/p/google-apps-manager/wiki/GettingAnOAuthConsoleKey
10: */
11: #define PETSC_GOOGLE_CLIENT_ID "521429262559-i19i57eek8tnt9ftpp4p91rcl0bo9ag5.apps.googleusercontent.com"
12: #define PETSC_GOOGLE_CLIENT_ST "vOds_A71I3_S_aHMq_kZAI0t"
13: #define PETSC_GOOGLE_API_KEY "AIzaSyDRZsOcySpWVzsUvIBL2UG3J2tcg-MXbyk"
15: /*@C
16: PetscGoogleDriveRefresh - Get a new authorization token for accessing Google drive from PETSc from a refresh token
18: Not Collective, only the first process in the `MPI_Comm` does anything
20: Input Parameters:
21: + comm - MPI communicator
22: . refresh_token - obtained with `PetscGoogleDriveAuthorize()`, if NULL PETSc will first look for one in the options data
23: if not found it will call `PetscGoogleDriveAuthorize()`
24: - tokensize - size of the output string access_token
26: Output Parameter:
27: . access_token - token that can be passed to `PetscGoogleDriveUpload()`
29: Options Database Key:
30: . -google_refresh_token XXX - where XXX was obtained from `PetscGoogleDriveAuthorize()`
32: Level: intermediate
34: .seealso: `PetscGoogleDriveAuthorize()`, `PetscGoogleDriveUpload()`
35: @*/
36: PetscErrorCode PetscGoogleDriveRefresh(MPI_Comm comm, const char refresh_token[], char access_token[], size_t tokensize)
37: {
38: SSL_CTX *ctx;
39: SSL *ssl;
40: int sock;
41: char buff[8 * 1024], body[1024];
42: PetscMPIInt rank;
43: char *refreshtoken = (char *)refresh_token;
44: PetscBool found;
46: PetscFunctionBegin;
47: PetscCallMPI(MPI_Comm_rank(comm, &rank));
48: if (rank == 0) {
49: if (!refresh_token) {
50: PetscBool set;
51: PetscCall(PetscMalloc1(512, &refreshtoken));
52: PetscCall(PetscOptionsGetString(NULL, NULL, "-google_refresh_token", refreshtoken, sizeof(refreshtoken), &set));
53: if (!set) {
54: PetscCall(PetscGoogleDriveAuthorize(comm, access_token, refreshtoken, 512 * sizeof(char)));
55: PetscCall(PetscFree(refreshtoken));
56: PetscFunctionReturn(PETSC_SUCCESS);
57: }
58: }
59: PetscCall(PetscSSLInitializeContext(&ctx));
60: PetscCall(PetscHTTPSConnect("accounts.google.com", 443, ctx, &sock, &ssl));
61: PetscCall(PetscStrncpy(body, "client_id=", sizeof(body)));
62: PetscCall(PetscStrlcat(body, PETSC_GOOGLE_CLIENT_ID, sizeof(body)));
63: PetscCall(PetscStrlcat(body, "&client_secret=", sizeof(body)));
64: PetscCall(PetscStrlcat(body, PETSC_GOOGLE_CLIENT_ST, sizeof(body)));
65: PetscCall(PetscStrlcat(body, "&refresh_token=", sizeof(body)));
66: PetscCall(PetscStrlcat(body, refreshtoken, sizeof(body)));
67: if (!refresh_token) PetscCall(PetscFree(refreshtoken));
68: PetscCall(PetscStrlcat(body, "&grant_type=refresh_token", sizeof(body)));
70: PetscCall(PetscHTTPSRequest("POST", "accounts.google.com/o/oauth2/token", NULL, "application/x-www-form-urlencoded", body, ssl, buff, sizeof(buff)));
71: PetscCall(PetscSSLDestroyContext(ctx));
72: close(sock);
74: PetscCall(PetscPullJSONValue(buff, "access_token", access_token, tokensize, &found));
75: PetscCheck(found, PETSC_COMM_SELF, PETSC_ERR_LIB, "Google drive did not return access_token");
76: }
77: PetscFunctionReturn(PETSC_SUCCESS);
78: }
80: #include <sys/stat.h>
82: /*@C
83: PetscGoogleDriveUpload - Loads a file to the Google Drive
85: Not Collective, only the first process in the `MPI_Comm` uploads the file
87: Input Parameters:
88: + comm - MPI communicator
89: . access_token - obtained with PetscGoogleDriveRefresh(), pass `NULL` to have PETSc generate one
90: - filename - file to upload; if you upload multiple times it will have different names each time on Google Drive
92: Options Database Key:
93: . -google_refresh_token XXX - pass the access token for the operation
95: Example Usage:
96: .vb
97: With PETSc option -google_refresh_token XXX given
98: PetscGoogleDriveUpload(comm,NULL,filename); will upload file with no user interaction
100: Without PETSc option -google_refresh_token XXX given
101: PetscGoogleDriveUpload(comm,NULL,filename); for first use will prompt user to authorize access to Google Drive with their browser
103: With PETSc option -google_refresh_token XXX given
104: PetscGoogleDriveRefresh(comm,NULL,access_token,sizeof(access_token));
105: PetscGoogleDriveUpload(comm,access_token,filename);
107: With refresh token entered in some way by the user
108: PetscGoogleDriveRefresh(comm,refresh_token,access_token,sizeof(access_token));
109: PetscGoogleDriveUpload(comm,access_token,filename);
111: PetscGoogleDriveAuthorize(comm,access_token,refresh_token,sizeof(access_token));
112: PetscGoogleDriveUpload(comm,access_token,filename);
113: .ve
115: Level: intermediate
117: .seealso: `PetscGoogleDriveAuthorize()`, `PetscGoogleDriveRefresh()`
118: @*/
119: PetscErrorCode PetscGoogleDriveUpload(MPI_Comm comm, const char access_token[], const char filename[])
120: {
121: SSL_CTX *ctx;
122: SSL *ssl;
123: int sock;
124: char head[1024], buff[8 * 1024], *body, *title;
125: PetscMPIInt rank;
126: struct stat sb;
127: size_t len, blen, rd;
128: FILE *fd;
129: int err;
131: PetscFunctionBegin;
132: PetscCallMPI(MPI_Comm_rank(comm, &rank));
133: if (rank == 0) {
134: PetscCall(PetscStrncpy(head, "Authorization: Bearer ", sizeof(head)));
135: PetscCall(PetscStrlcat(head, access_token, sizeof(head)));
136: PetscCall(PetscStrlcat(head, "\r\n", sizeof(head)));
137: PetscCall(PetscStrlcat(head, "uploadType: multipart\r\n", sizeof(head)));
139: err = stat(filename, &sb);
140: PetscCheck(!err, PETSC_COMM_SELF, PETSC_ERR_FILE_OPEN, "Unable to stat file: %s", filename);
141: len = 1024 + sb.st_size;
142: PetscCall(PetscMalloc1(len, &body));
143: PetscCall(PetscStrncpy(body,
144: "--foo_bar_baz\r\n"
145: "Content-Type: application/json\r\n\r\n"
146: "{",
147: sizeof(body)));
148: PetscCall(PetscPushJSONValue(body, "title", filename, len));
149: PetscCall(PetscStrlcat(body, ",", sizeof(body)));
150: PetscCall(PetscPushJSONValue(body, "mimeType", "text.html", len));
151: PetscCall(PetscStrlcat(body, ",", sizeof(body)));
152: PetscCall(PetscPushJSONValue(body, "description", "a file", len));
153: PetscCall(PetscStrlcat(body,
154: "}\r\n\r\n"
155: "--foo_bar_baz\r\n"
156: "Content-Type: text/html\r\n\r\n",
157: sizeof(body)));
158: PetscCall(PetscStrlen(body, &blen));
159: fd = fopen(filename, "r");
160: PetscCheck(fd, PETSC_COMM_SELF, PETSC_ERR_FILE_OPEN, "Unable to open file: %s", filename);
161: rd = fread(body + blen, sizeof(unsigned char), sb.st_size, fd);
162: PetscCheck(rd == (size_t)sb.st_size, PETSC_COMM_SELF, PETSC_ERR_FILE_OPEN, "Unable to read entire file: %s %d %d", filename, (int)rd, (int)sb.st_size);
163: fclose(fd);
164: body[blen + rd] = 0;
165: PetscCall(PetscStrlcat(body,
166: "\r\n\r\n"
167: "--foo_bar_baz\r\n",
168: sizeof(body)));
169: PetscCall(PetscSSLInitializeContext(&ctx));
170: PetscCall(PetscHTTPSConnect("www.googleapis.com", 443, ctx, &sock, &ssl));
171: PetscCall(PetscHTTPSRequest("POST", "www.googleapis.com/upload/drive/v2/files/", head, "multipart/related; boundary=\"foo_bar_baz\"", body, ssl, buff, sizeof(buff)));
172: PetscCall(PetscFree(body));
173: PetscCall(PetscSSLDestroyContext(ctx));
174: close(sock);
175: PetscCall(PetscStrstr(buff, "\"title\"", &title));
176: PetscCheck(title, PETSC_COMM_SELF, PETSC_ERR_LIB, "Upload of file %s failed", filename);
177: }
178: PetscFunctionReturn(PETSC_SUCCESS);
179: }
181: #if defined(PETSC_HAVE_UNISTD_H)
182: #include <unistd.h>
183: #endif
185: /*@C
186: PetscGoogleDriveAuthorize - Get authorization and refresh token for accessing Google drive from PETSc
188: Not Collective, only the first process in `MPI_Comm` does anything
190: Input Parameters:
191: + comm - the MPI communicator
192: - tokensize - size of the token arrays
194: Output Parameters:
195: + access_token - can be used with `PetscGoogleDriveUpload()` for this one session
196: - refresh_token - can be used for ever to obtain new access_tokens with `PetscGoogleDriveRefresh()`, guard this like a password
197: it gives access to your Google Drive
199: Level: intermediate
201: Notes:
202: This call requires `stdout` and `stdin` access from process 0 on the MPI communicator
204: You can run src/sys/webclient/tutorials/googleobtainrefreshtoken to get a refresh token and then in the future pass it to
205: PETSc programs with `-google_refresh_token XXX`
207: .seealso: `PetscGoogleDriveRefresh()`, `PetscGoogleDriveUpload()`
208: @*/
209: PetscErrorCode PetscGoogleDriveAuthorize(MPI_Comm comm, char access_token[], char refresh_token[], size_t tokensize)
210: {
211: SSL_CTX *ctx;
212: SSL *ssl;
213: int sock;
214: char buff[8 * 1024], *ptr, body[1024];
215: PetscMPIInt rank;
216: size_t len;
217: PetscBool found;
219: PetscFunctionBegin;
220: PetscCallMPI(MPI_Comm_rank(comm, &rank));
221: if (rank == 0) {
222: PetscCheck(isatty(fileno(PETSC_STDOUT)), PETSC_COMM_SELF, PETSC_ERR_USER, "Requires users input/output");
223: PetscCall(PetscPrintf(comm, "Cut and paste the following into your browser:\n\n"
224: "https://accounts.google.com/o/oauth2/auth?"
225: "scope=https%%3A%%2F%%2Fwww.googleapis.com%%2Fauth%%2Fdrive.file&"
226: "redirect_uri=urn:ietf:wg:oauth:2.0:oob&"
227: "response_type=code&"
228: "client_id=" PETSC_GOOGLE_CLIENT_ID "\n\n"));
229: PetscCall(PetscPrintf(comm, "Paste the result here:"));
230: ptr = fgets(buff, 1024, stdin);
231: PetscCheck(ptr, PETSC_COMM_SELF, PETSC_ERR_FILE_READ, "Error reading from stdin: %d", errno);
232: PetscCall(PetscStrlen(buff, &len));
233: buff[len - 1] = 0; /* remove carriage return at end of line */
235: PetscCall(PetscSSLInitializeContext(&ctx));
236: PetscCall(PetscHTTPSConnect("accounts.google.com", 443, ctx, &sock, &ssl));
237: PetscCall(PetscStrncpy(body, "code=", sizeof(body)));
238: PetscCall(PetscStrlcat(body, buff, sizeof(body)));
239: PetscCall(PetscStrlcat(body, "&client_id=", sizeof(body)));
240: PetscCall(PetscStrlcat(body, PETSC_GOOGLE_CLIENT_ID, sizeof(body)));
241: PetscCall(PetscStrlcat(body, "&client_secret=", sizeof(body)));
242: PetscCall(PetscStrlcat(body, PETSC_GOOGLE_CLIENT_ST, sizeof(body)));
243: PetscCall(PetscStrlcat(body, "&redirect_uri=urn:ietf:wg:oauth:2.0:oob&", sizeof(body)));
244: PetscCall(PetscStrlcat(body, "grant_type=authorization_code", sizeof(body)));
246: PetscCall(PetscHTTPSRequest("POST", "accounts.google.com/o/oauth2/token", NULL, "application/x-www-form-urlencoded", body, ssl, buff, sizeof(buff)));
247: PetscCall(PetscSSLDestroyContext(ctx));
248: close(sock);
250: PetscCall(PetscPullJSONValue(buff, "access_token", access_token, tokensize, &found));
251: PetscCheck(found, PETSC_COMM_SELF, PETSC_ERR_LIB, "Google drive did not return access_token");
252: PetscCall(PetscPullJSONValue(buff, "refresh_token", refresh_token, tokensize, &found));
253: PetscCheck(found, PETSC_COMM_SELF, PETSC_ERR_LIB, "Google drive did not return refresh_token");
255: PetscCall(PetscPrintf(comm, "Here is your Google refresh token, save it in a save place, in the future you can run PETSc\n"));
256: PetscCall(PetscPrintf(comm, "programs with the option -google_refresh_token %s\n", refresh_token));
257: PetscCall(PetscPrintf(comm, "to access Google Drive automatically\n"));
258: }
259: PetscFunctionReturn(PETSC_SUCCESS);
260: }